Mages have a variety of starting life totals. Both the Priestess and the Druid (with the Treebond ability) can alter their life totals during the game. Mages also have a couple of different starting channeling stats, and there are many game cards that affect channeling. All current mages start with 0 armor, but there are plenty of cards that give/take armor (and I saw some speculation in another thread that the Paladin might be a mage with starting armor).
The fourth stat at the top of all mage cards is the 120 spell points. I see no particular reason why this should be fixed. In fact, it seems to me the only reason to print this on all the mage cards (instead of just in the rule book) is with some plan to let it vary at some point. Here are a few different ways this stat could be adjusted:
Direct bonus/penalty: This would be a mage whose printed spell points are more/less than 120. There would have to be some other stat or ability to offset this.
Conditional extra spell points: It would be neat to see, for example, a mage who gets 1 extra spell point for every 10 level 1 spells in the book (or with some other, better tested, numbers). Or a mage who gets 1 extra spell point for every out-of-school creature, etc.
Pay spell points for bonuses: I really like the idea of having a mage with a very high spell point stat and the following ability. Before the start of the game, the mage can
- lower their spell stat by X to gain training in any major school
- lower their spell stat by X to gain training in any minor school
- lower their spell stat by X to raise their starting channeling by 1
- lower their spell stat by X to raise their starting life by 1
- lower their spell stat by X to raise either their melee or ranged attack by 1
(Note: The X values would all be different, and would likely depend heavily on playtesting. The mage would have to communicate all decisions before the start of the game.) It would especially neat if, along with such a mage, there were "this mage only" cards that referenced this ability. For examples, an equipment which gives armor and Flame -1 if trained in Water, Earth -1 if trained in Air, etc. So the "this mage only" cards would also become customized by the ability.
Sideboarding: Imagine a mage with a spell stat like "120 + X", where they can spend X spell points on a pile of spells separate from their spellbook. Upon some game condition (perhaps as a full/quick action), the mage would be able to add 1 of these cards to their spellbook for the remainder of the game.