I think a big bang sounds like an awesome idea (a wiki sounds like a good idea, too, and seanchai might even be able to host it on Tales of Suspense -- she's checking out the web host and the site coding to see if it would be possible).

On my part, I suspect officially signing up for the big bang might be cheating, though. You know: "Here's this long fic I was already writing anyway. Give me art."

Hmm... Depending on when the challenge kicks off, maybe we'll be done with alien invasion epic of doom by then and can start a new fic for it.