Here's an idea! How about a gametype where one player (chosen at random I'm sure) is a monster version of a Ghoul (like in Ghouls' Forest!), and everyone else is whatever type of human? It'd be GVH and GF combined!
And let us not forget big maps. As in Underhell-sized or whatnot. That would please both GVHers and the cooperative fans as well.
And no, I am not making this myself. I am a screamer, not a modder.