instead, why not just have skill slots be controlled by the intelligence stat? same rule; 2pts intelligence gives you an extra memory slot.
So
fighters, rangers, and rogues have to split their attribute points, but mages get extra benefit from something they were already going to use in the first place?
If you're going to do that to mages, at that point, it might as well be better to return to the school-based skill slot system from DOS EE instead.
