Well I hate to come back to stuff that has already been settled, but what about this? Instead of numbers you could have like 8 locations and people could send their chars to the locations instead of numbering them, and whoever wound up in the same location fought? That would eliminate the problem of picking different locations, allow everyone that extra level of strategy, still allow for 2 prepped chars, and eliminate arguments like the one with Namor (I was still thinking even after that explanation from DI about the hose or pool etc.: Does he get there before the match and do this, or after he arrives? And if it's after, why don't they kill him while he's making his pool?).