I was just thinking, assumingly the classes are relatively well balanced in terms of combat, probably not as good as 4e but still relatively well balanced.
However in the area of utility abilities I am assuming they aren't. That mages can teleport, speak psychically, pick any lock, turn invisible, ignore terrain and on and on and the rest of the classes are left tracking, lock picking or discerning. All of which have spell equivalents or similar that do a better job.
Anyway, I was thinking that maybe requiring component costs could balance out the (assumed) lack of utility in non-magic classes. It worked for 4e.
I say assumed because I have only played fighters here and it just may be the lone exception. Or maybe I'm, over estimating the ability of mages in this game.