There is a lot of cases, where zombies kill survivor and nothing happens, he just lays there.. on the ground until somebody comes and loots him. Would be better, if zombies kill a survivor, he also turns into a zombie... his skin doesn`t change, but he has got all the zombie animations and nobody is able to get his loot until he kills him. I think this would make DayZ even cooler. Would be epic if this suggestion is added to the coming Standalone version.