Ighalli knew the god system best, and it'll have to be modified for multiplayer.
Planplan once worked on a mod with Blob, and he made something to help with level making, so he coulda been of great help too.
Z appears to know all (no, not like god, in programming) and he's still around, and the rest of us don't really know much (with the possible exception of Atomic). So Serefan will probably be relying on Z a lot.
Well Erno, that's what I mean. Can't SoCM zombie torsos, and once the torso's rotted away, it's just a few artificial limbs lying about, of no use at all.