Perhaps higher level investment in intelligence could even give brand new effects to spells. At 20 int, maybe Armor of Frost also cures frozen, and for every status cured, it heals the target, or perhaps it offers chill on contact and an water damage bonus.
I like this idea.
I'd also like to see some incentive to specialize in a certain school. For example spells that required 5 in Hydro or something.
At the moment, with the exception of Archers, I tend to put one point in pretty much every school (except Geo) for everyone because I always want Adrenaline and Rage and Crippling blow and Haste and netherswap and so on. This seems more helpful than the little 5% damage bonus you get for specializing but that could be just how I play of course.
