I, in my personal opinion, would think its a swell idea to ha- WAIT JUST HEAR ME OUT ON THIS!
-ve non violent solutions. I played Dishonored without killing anyone. It was more fun that way in my opinion.
Speaking of which, I think a behind-the-back-chocking-knockout mechanic would be a great, as opposed to the usual behind-the-back-backstab mechanic.
For those who disagree, why not just use both mechanics?
I can also see how dialogue can get you out of a fight, or rather, prevent a fight all together.
You could also use INDIRECT means into causing deaths, such as you sneak into a keep under siege and just unlocking the front door.