I would be willing to have another go, especially if it's on a different map. I've seen plenty of the standard one, since I had to conquer, er, liberate the whole thing solo in my other game. PvP was mentioned at one point: I'm not particularly excited by it but I wouldn't rule it out. I enjoy the camaraderie of fighting a common enemy; and I worry whether free players might be hampered by the recruiting color restriction moreso in PvP than against the tactically deficient zombies. (I'm not the last holdout for getting a key, am I?)
I don't have a key yet--although our last game was pretty fun. I'm swamped with work until the weekend, though, so I doubt I'll be able to jump right in immediately if we do start up a new game.