Judging by how a big white marker appears when you go stealthy, I suspect the stealth system is, much like encumbrance was pre patch 5, not properly implemented. Barrelmancy is much more akward to do now I can't lug them all around so easily! I expect once AI is properly integrated with the stealth, movement to where you were in stealth (non humans can very often see in the dark after all) or even outright throwing things like alchemists' fire or such is going to start happening.
