Infected spartans? That'd be cool, but i don't think bungie will even add flood on the game disk because there should't be any flood on reach, so making flood models just for infection gametypes would just chew up time and space on the game disk. Still, its a good idea tough.
Maybe it could be done with less time and cost by adding a zombie-only melee weapon which makes the players hand look flood-infected with the tentacles and stuff. Could be easily done by copying the energy swords traits for it, making it to look like the flood-hand and removing the lunge-ability.
[Edited on 11.08.2009 6:32 AM PST]