I'm curious about your reasons for removal of the psionics. What about those classes puts them on your chopping block?
Also I was thinking of using the prc in a mod where the top end gear maxes out at +8 (with no perma haste or perma immunity to stuff like death/knockdown/etc) and trying to decide which classes would be out of whack in such a setting.
seriously unbalanced in short, most spells are totally off, some classes itself are, easier to ban them all than trying to balance it really
also some feats are good to disable, the one that allows rdd without bard/sorc, Necrotic Cyst and maybe few more but I dont remember
from spells most with drug component or alignmnetn restriction doesnt fit NWN at all too