As far as stealing, I don't have enough experience to comment. But, as far as sneaking, it would be cool if the 'enemy' wasn't deaf as a doorknob and had at least decent peripheral vision. Presently, I can't use stealth, as it's simply a toggle that makes me untargetable. I mean, maybe I need to jump to the side of them at times, but that's not too challenging, the AI simply can't deal with stealth. Being hidden is almost as good as being invincible, one would think that one might need to work for it a bit.