Well I think that would cause other problems though. If you got a bonus +3W for casting, and you did go for the W9 blessing for example, then for those points you get a 12W caster, before boosters. Some spells scale incredibly well with magic level, and also you get very nice bonuses to global casting.
But I guess just to clarify, you're suggesting some sort of second shape for them? The same as the first shape, but more magically inclined?
