Hmmm... allow players, killed by other players to rise as zombies IF they choose to wait a random amount of time. E.g. I get shot by some CoD kiddie, I get asked "do you want to have vengeance after . If I say "yes" I get resurrected as a zombie corpse and I can try to eat the CoD kiddie who just shot me and tries to loot my stuff. Some variation - instead of resurrected a player could spawn as a random zombie in the bushes nearby and still get the revenge BY EATING:) In any case - after one gets bored - there is a single menu option "Die" and then you respawn normally as a new survivor.
