Yeah, I think I'll do that. I'm also going to put in some item creation plugins for cornucopias and such, and flight for Ops.
Would anyone want to be "Game Master" besides me? I'd like to participate too

I'd be happy to do it and also build some nice traps for the arena. Also, CraftIRC appears to support
multiple channels. Perhaps one IRC channel where the players can talk (and have the bot crosspost to the other channel from there) as well as a spectator channel that does not get crossposted back.
EDIT: Fixed linky