Examples:
I draw the swords, enter a bandit lair... attack, kill some bandits, alarm the whole lair and flee. I use sprint to get away and few yards later I sneak... and hear from the distance "what was that? uh nothing"... and the five bandits (inclusive chief) who just were chasing me, turn around and forget I just killed few of them...
I sneak around a corner, sneak-attack a bandit chief, do only 20% damage, its like stiring up a hornets nest... the chief runs rampage, a coumple of other bandits as well. The chief runs with an arrow through his throat... "what was that? anyone here?"... I perform some silent rolls and 5s later im safe, as if I never shot the chief...
Or I kill a bandit, another bandit (patrol) comes across the dead body... "what happened? who was that? I will find you".... sure, the bandit have the attention span of a newborn... 5s later the bandit continues the patrol, when he returns, comes across the dead again "what hapened? who was that?..." ... ridiculous.
Right now "sneaking" is too overpowered, or at least the way how the AI reacts to it. I mean... you go into sneaking in the FRONT of a shopkeeper, move behind and steal or murder, noone notices (in Oblivion the npc turned his head and was watching you closely all the time)...
I think something have to be done