peanut (DayZ)

I apologise if this has already been mentioned, I haven't read the entire thread. How about some sort of guilt/conscience system, where your character is negatively affected by merciless killing of innocent/unarmed people? Maybe there can be a system wherein for every unarmed person you kill you feel more guilty, and every unique person who you help (and does some sort of "thank" command on you) makes you feel less guilty. Feeling too guilty can lead to depression, which causes lack of motivation (slower movement speed), increased hunger, inability to concentrate (makes it more difficult to aim through a scoped rifle) and, if you get too depressed, suicidal tendencies. This seems like a potential solution to the merciless killing going on while not requiring extreme changes to the game. Thoughts/criticism?