Trample attacks are neither ranged nor melee attacks. So you don't get any Melee +X traits.

Just to clarify, using Force Push to move a creature with Trample also wouldn't trigger the ability, correct?  (And I'm aware that the Titanodon has the Unmoveable trait, I'm just asking in general.)  Trample can only be triggered by a move action which the creature itself initiates?

a goblin grunt could deal 2 damage as well to become veteran, deal or receive 2x level damage. Orc butcher only needs to roll 4 damage. Don't think either one of those is too hard to do, even without enchantments or orders.

Also want to point soldiers not in school are awesome, tons of skeletons, tons of holy dudes(KnightofWestlock) tons of stuff from PvsS

The impact of soldier subtype is pretty big, orders plus some incantations, veteran token for himself and armory. Soldier subtype is way big, not way small

The 2x damage change would be fine for Orc Butchers, because they have have a decent amount of health.  Goblin Grunts, on the other hand, have 0 armor and 4 health, making them one of the easiest creatures to kill in the entire game.  Let's say you do manage to have everything go according to plan.  You get a fresh Goblin Grunt into position, get a good roll against a low-armor opponent, and it becomes a veteran.  You now have to wait an entire turn to be able to make use of the melee +1, and in the meantime, what are the odds that your opponent won't just murder your goblin?  Even with the armor +1, most level 2 or greater creatures would have a good chance of killing the goblin with either a 3 dice +1 piercing attack or a 4 dice one.  Sure, your idea is better than the official veterans implementation, but it still isn't ideal in my opinion. 

There are exactly 4 different skeleton soldier creatures (not counting Academy ones, if any).  Even if they were in-school, they don't seem worth playing over equivalent War creatures for the Warlord.  Mort is decent for his taint condition and survivability, but he's too costly to play without going all-in on a skeleton army.  Skeletal Minions are almost as bad as Goblin Grunts, and you can't buff them with Nature enchantments or heal them via normal means.  Skeletal Knights and Knights of Westlock are decent defenders, but if you want to go defensive just use Dwarf Panzergardes instead.  The only out of school soldiers I would even consider using (other than legendaries) would be the Skeletal Archer and/or Royal Archer, because quite frankly Goblin Slingers are terrible.  Skeletons are pretty much only good if you are a necromancer, because otherwise it is hard to get them to synergize properly.  If you want to play stuff that is nonliving and psychic immune, why not just use Iron Golem? 

I forgot about the vet token for himself, which would be weird but nice.  Still, I don't think a relatively free couple of armor and a melee +1 would make him competitive (and by your own rules, the Warlord would need to either take or dish out 12 damage before getting that veteran token).  You can already get similar buffs by slapping on a Rhino Hide or similar Nature enchantments (although of course those can be dispelled). 

I like the Idea of allowing warlords to somehow become soldiers, but I wouldn't do it by errata.
Just like the Warlock got the Demonhide Mask that makes him a demon while attacking, so could the Warlord academy expansion include a "Soldier Cloak" that allows Warlords to be counted as soldiers during attack resolution (of either their attacks or attacks against them). It could also allow them to benefit from their own battle orders as an additional effect. If you are a bloodwave with that "Soldier Cloak", it actually means that your mage could get veteran tokens, as the destruction of enemy creatures could happen during attack resolution
If you want to help the bloodwave warlord more, then you could just create spells that make synergies for orcs, just like you have Slaknir for the goblins and Redclaw Alpha for canine.

Agreed.  I can easily see Arcane Wonders coming out with a Soldier's Helmet or Soldier's Cloak card to give the Warlord the soldier subtype under certain circumstances.  Keep in mind, however, that veteran tokens do not stack, so the Warlord could only ever get 1.  The problem with just buffing up goblin and orc strategies is that there is nothing from stopping the Dwarf Warlord from using goblins and orcs, just like nothing is stopping the Bloodwave Warlord from using dwarf creatures. 

I do agree that the Priest, Johktari Beastmaster, and Bloodwave Warlord seem to be in a pretty bad place right now.  I think some of the problems are fixable without direct erratas / houseruling, but most of them are not. 

Priest:
Yeah, he should definitely either have 10 channeling or not pay 1 mana to place burns (potentially even both).  There's just no reason to pick him over the Priestess (for defensive play) or Paladin (for aggressive play) at the moment.  Of all the mages, he is consistently the most mana-starved in my experience.  If Arcane Wonders ever wants him to be competitive, I don't think there is any way to get around directly altering his abilities (even if only slightly). 

Beastmasters:
While your solution does work, I don't think it's actually necessary in the long run.  The Straywood Beastmaster is fine as is, and introducing new cards could solve the awkwardness of the combined Sprint and Archery traits.  Maybe a card which gives the skirmish trait while attacking with a ranged weapon, or perhaps an enchantment that grants +1 range to attacks.  Another option is changing the Sprint ability to allow the Johktari Beastmaster to use a full-action ranged attack after moving twice by deducting 1 damage from the attack for each move action.  I kind of feel like a more comprehensive action is needed though.  Bows in general just seem really underpowered with every mage due to how restrictive they are.  There is an abundance of people running positioning cards like Teleport and Force Push, which probably makes the extra range much less safe than the developers intended. 

The other problem with the Johktari Beastmaster, which you didn't address, is her Wounded Prey ability.  It sucks.  In addition to the +1 damage the creature receives, I would also like it to apply the Lumbering trait, and halve all healing received by the creature (rounded down?).  This would make the ability really useful (at least against living targets), let the Beastmaster more easily kite with ranged weapons, and turn her into a mage which specializes in focusing down one creature at a time. 

Warlords:
Lastly there are the Warlords.  I agree with your suggestion that Battle Orders should be free to cast (once per round).  I kind of wish the 2 Warlords' Battle Orders were more differentiated from each other (Bloodwave should be way more offensive than Anvil Throne), but that is hard to fix at this point without completely redoing them.  Unfortunately, there is almost no way to make the Bloodwave Warlord equivalent to the Anvil Throne Warlord without some sort of errata or houseruling.  The Runesmithing ability is just so good, while the Veterans ability is terrible.  I suggest keeping the limitation that veteran tokens cannot stack (to dissuade the Warlord from buddy build strategies), but instead change the ability to read as thus: "Whenever an enemy creature is destroyed, you may choose up to 3 friendly soldier creatures within 1 zone of that creature and give them a Veteran token (maximum of one token per creature).  Creatures with a Veteran token gain melee +1, ranged +1, and armor +1."  This would make the Warlord's goblin and orc armies a lot more viable (arena-wide buffs to goblins would also help; [mwcard=MWBG1C04]Slaknir, Goblin Chieftain[/mwcard] was a good start but more is needed.  The change would also mean players are no longer punished for killing creatures with their mage or playing ranged units (who beforehand gained little benefit from becoming veterans). 

Some of these changes might need a bit of tweaking, but I think they are a step in the right direction.  In general:
1. the priest needs more mana efficiency (as well as access to more spells which the Paladin cannot as easily use)
2. the Johktari Beastmaster needs better incentives to stay at range, needs to be able to kite creatures effectively, and needs to just generally be less awkward to play
3. the Bloodwave Warlord needs a better primary ability

I don't know it looks like the leviathan and the Kraken would combo well together...

Maybe, but then we're talking 43 mana invested purely in 2 creatures (more if you want to buff them).  That's not a particularly fast or unpredictable strategy, so your opponent should be able to think up some way to deal with it.  A well-timed [mwcard=MW1I01]Banish[/mwcard] or [mwcard=MW1I26]Sleep[/mwcard] would almost definitely cost you the game. 

I'm not a big lore expert, but wouldn't the amount of mages required depend on the particular mages themselves?  An expert mage would be capable of channeling a lot more mana than a novice or apprentice.  Beyond that, I don't know enough about the lore to even give you a rough estimate. 

Unless you've seen the whole set (which I haven't), there are a lot of assumptions here.

Well, I did state in my post that I was making guesses and assumptions since we haven't seen the vast majority of the new cards. 

Before PVS there are less than ten water spells. After PVS there are approximately 40. I might be off a little, but I did just count them the other day. This set makes the Water school huge.

I'm not saying the Water school won't get a massive buff from the expansion, but you're looking at an almost non-existent school at the moment.  Let's go ahead and estimate that after the expansion the school has 40 cards.  Then, guessing completely blindly (because I have no idea how many song and pirate cards are included in the set), let's also add in 12 non-Water pirate cards and 12 non-Water song cards (which is probably being generous).  That gives the Siren a total (in-school) card pool of roughly 64 cards.  That sounds pretty good, but let's compare that to other mages.  The Priest/Priestess has a card pool of 39 Holy cards, based on the card database from this website.  But, that doesn't account for the new cards released in the Priestess Academy expansion (roughly 24, by my count).  It also doesn't account for the new Holy cards which the PvS expansion itself will bring.  Let's low-ball that and say 15 (6 Holy cards have already been spoiled).  That gives a rough total of 78 cards.  I'll go ahead and list some other Mages as well (ones which shouldn't be as affected by the release of PvS. 

Beastmaster = 69 Nature + 21 Academy (roughly) = 90
Warlock = 79 Dark + 18 Fire = 97
Necromancer = 79 Dark = 79
Forcemaster = 37 Mind = 37
Warlord = 17 Earth + 70 War = 87
(Errata'd) Wizard = 22 Air + 47 Arcane + 24 Academy (roughly) = 93

My point is that even with the massive influx of Water school cards, I fear Arcane Wonders is going to have to end up doing what they did with the Warlord: moving a secondary expansion forward so that the card pool is even somewhat on par with other schools.  The only mage with a more limited set of in-school cards is the Forcemaster, who also happens to belong to the only school which has not yet received any major expansions after its introduction in FvW.  This is the problem with waiting this long to really establish the Water school: most of the other schools are so far ahead that one expansion just can't cram enough cards in to equalize the balance.  Despite everything I just said, I'm not nearly as worried about her initial card variety as I am about how that card pool will be expanded down the line (I'll go into detail below). 

And just like every other school, there's no reason Arcane Wonders can't include new Water spells (or Pirate or Song, for that matter) in future expansions.  There is almost always a new good card for every existing mage in every expansion thereafter.

And some day we might see Frost damage type become a thing, which would also presumably fall within the Water school... so in general, i think the Siren will have plenty of spells she's trained in.  But I think something you're missing is that NOT being trained in a school doesn't make it outlawed; All Mind spells cost the standard double, which means all the level 1 Mind spells cost 2 sbp's, etc... so... fill your boots and include as many Psychic spells as you want!

Let's get Frost out of the way first.  The community knows of the next several upcoming Mage archetypes.  They will most likely be the Barbarian and Sorcerer first, followed by possibly a Shaman and some sort of Vampire.  Unless something changes drastically, the next alt pair of mages will be Forcemaster vs Wizard.  The next Battlegrounds expansion will be the Archmage.  None of those mages are very likely to be the long-awaited Frost mage or have any water training whatsoever (with the possible exception of the Vampire).  So even in the best-case scenario, the Siren will be waiting at least a good 2 years before another water mage is added. 

With that out of the way, sure, Arcane Wonders can add new cards for the Siren here and there in other expansions.  But the bulk of those expansions will always be dedicated towards helping out the new mages and the schools they belong to.  The introduction of the Necromancer helped out the Warlock.  The Druid helped out the Beastmaster.  That's why I really wish the Siren was trained in Psychic spells.  She could have leeched off of the upcoming Alt FvW set coming out eventually.  Instead, she shares practically no training overlap with any other existing or upcoming mage, meaning her card pool will almost inevitably become stale while other mages continue to acquire more new cards.  The Siren is the exact opposite of the original Wizard. 

You're right, not being trained in a school doesn't make it outlawed.  But it does drastically decrease efficiency with spellbook points (halves them, to be precise).  Additionally, most mages don't care very much about the school which they have to pay triple for (with the possible exception of the Warlord).  Warlocks don't need or particularly want most Holy spells because they don't synergize with their pre-existing strategies.  Same with the Druid: she rarely needs or wants fire or war spells (especially high-level ones).  I would actually prefer a Siren fully trained in Water and Mind with two triple-cost schools (Earth and War maybe?) (obviously she would continue to be trained in songs as well).  I don't expect anything to change at this point, but I wanted to share my concerns nonetheless. 

Lastly, it's too early to be worried about her stats.  I'd be shocked if she didn't have cards that boost them in some way.  ...I wouldn't be surprised if there is an Aquatic Terrain card, perhaps a "coral reef," that the Siren needs to protect that gives her +1 channeling and +X life, which  automatically combos nicely with her built-in Regenerate and other abilities, and which is analogous to Treebond without using up a mage ability.  Although maybe that would be too similar to the Druid (?).

Also, Shallow Sea needs to be considered when looking at the Siren. She can run six of them and that gives her a large area where it's harder to hit her, she regens, and she swings harder if she wants.

I doubt the devs would give the Siren something so close to another mage's ability, but who knows. 

The problem with Shallow Sea is that, (while a good card and reusable due to Cantrip) it costs 5 mana to use and only covers one space.  As I already brought up, mana is already kind of an issue.  How is the Siren supposed to have mana to use her abilities somewhat frequently, cover decent areas of the map with terrain so that she and her creatures can play to their aquatic strengths, and still have mana to actually summon and support a decent army of creatures?  Maybe I'll change my mind after seeing her spawnpoint or something else, but right now my feeling is that she needs a lot of set-up time and doesn't have the survivability to withstand an early rush, while other defensive mages can beat her through economy. 

Wow.  Things just got real.  Those are some absolutely massive changes.  People have been debating if and/or how to nerf the Wizard for awhile, so it's nice to see Arcane Wonders finally weighing in.  These aren't even close to the changes I personally would have made, but I'm absolutely sure the staff have playtested these ideas VERY carefully, so I'm excited to see how it goes. 

In hindsight, the change to an air-only Wizard was strongly hinted at based on the similar nature of the Academy Wizard.  I'm still not sure what I think about this change.  It definitely limits his card pool availablity (which had contributed to keeping him a top-tier pick throughout Mage Wars' entire existence).  On the other hand, the Wizard's ability to choose a limited specialization is what most set him apart from other mages, and I'm a bit sad to see that ability disappear entirely.  Plus, there's no real thematic reason for a Wizard to be associated with air over any other element.  Presumably air was picked because every other element already has an associated mage (earth has Warlord, fire has Warlock, and soon water will have Siren). 

I'm surprised the developers didn't go the obvious and simple route of making the Wizard's Tower epic, but I kind of like what they did with it.  The Wizard in the core set (before he starting mutating by "stealing" other schools' cards and abusing the toolbox nature of the tower) was usually geared towards delaying his opponent's ideal actions so that the Wizard had a short-term advantage until he either won the fight or ran out of tricks.  The new Wizard's Tower looks like it will help with that playstyle.  It provides potential extra firepower and board control every turn, but at the cost of burning through the Wizard's stockpile of attack spells.  Now the Wizard actually has to choose between conservation (an Elemental Wand) and action efficiency (the Wizard's Tower). 

Regardless of how things turn out eventually, these two changes pretty much force every existing Wizard player to radically alter his/her spellbook (since most of them are now illegal).  The next Gen Con tournament is going to be very interesting.