I believe it is too early to start even thinking about these kinds of features as we won't know how actually working zombies (and a lot of them), little to no food and weapons available etc. will affect player interaction in the future. I'm quite certain that when this game is done, there is less reason to KoS.

Doesn't the "check pulse" option tell you that the corpse for example "feels warm to the touch and has no pulse"? If not then this would be a nice feature.