[Babul]

-make the zombies work together to hunt players down
-disguise them with a /pukebomb
-include an adrenaline pill pickup (yes, the "native one" !), its fun to run around with a tec9 like sonic the hedgehog lol
-make some commands for teamplayers to enhance their weapons/skills (singlehanded weapon upgrade for you/all players, heal you/all players etcetc)

btw, those are features iam currently scripting on.. gl ^^