A pity you do not have spells that ignore enemy spell resistance in the videogame or feats and race or class features to improve your chances to ... hey wait!
Compared to all the spells that don't? It's the same as with attacks, there are fewer attacks and abilities that target touch ac vs.normal ac. Not every spellcaster class is a wizard with multiple pit spells. So you either stack the numbers youtself, or use the few abilities & spells that don't require excessive number stacking. Because the underlying issue is that enemy design in WotR is very repetitive; there is no variation to this "bloat the stats" theme. I'm in act iv and combat has long gotten stale.
