I would suggest you look at things not just as a game, but also as a shared storytelling/writing device, not as a competition so much as just an ability to create and enjoy yourself with like-minded individuals. In that regard, while somewhat morbid, it'd be amusing to see how people deal with death and injuries and what not (there's so much distance here and we've looked at fantasy booking scenarios and what ifs and what not for so long...). The knowledge can be built into a plus and the way that people deal with it relative to how it was dealt with real life could be interesting. It doesn't need to be about "winning" so much as creating a fun, crazy shared experience, no? I think there's plenty of room for competitiveness in there too.