Another problem I've spotted for mages is that there is no longer any AP reduction for their skills if you invest more in a particular school of magic. It seems like a MASSIVE nerf to just have access to more spells, and thats it. No other bonus.
I would vote change the system - make more powerful spells take up more spell "slots". That way it limits players stacking up all of the best spells and ignoring the lower level ones. If players want to be the best mage, they have to invest more heavily in a particular school of magic BUT multiclassing chars can still have access to good spells.
