Welcome to the forum, godai.
So bought everything at Bashcon? Seems like you like to dip your toe in before plunging in...
I think having all 10 mages built simultaneously is an impossible aim, settle for 8 and choose between the alternate mages.
This thread could serve a great use if people posted the spells they really wish they had more of (and how many).
My wish is they create a Core Upgrade Pack that has (X - number cards in Core Set) where
X = 6 if level 1
X = 4 default
X = 3 unique or limited school only
X = 2 legendary or specific mage only
X = 1 epic
That to me would have been the ideal Core Set Upgrade Pack
Ideal distribution is complicated because the utility of the card and how common it will appear in different books.
For example, everyone wants more
* Teleport
* Dragonscale Hauberk
* Elemental Cloak
* Regrowth Belt
* Enchanter's Ring
Booster packs with these spells (and others) should be created because there is demand for them.
Maybe each of these Booster packs should have a theme.
For example: "Beastmaster Booster 1" may have all the missing level 1 animals, Rajan's Fury and Marked for Death needed to play that archetype, "Wizard" will have more Teleports, Whirling Spirits etc. I'm just thinking about the cards we borrow and proxies we use. (Not to mention any errata text cards). These boosters would be cheap and themed towards certain builds to minimise what you need. It's good support.
Can posters think of any other cards that they need?