I'd love to see zombies attack them and if they are killed they turn into more zombies, but still in the clothes they were wearing (so not your standard zombie skin)...
It would be cool if that happened to the players too. That is, if you're killed by a zomibe you turn into one yourself and you die after a short period. During that period you can be "healed" by other players to return you back to human.
I'm just sick... I take that back, not "sick of" but it would be nice if the danger element wasn't just death but a range of other interesting ways to be incapacitated that plays on the multiplayer elements too.
I wouldn't be surprised if there was a mod like that, but if that was in vanilla I'd be happy
