#3 Triple Threat
Good God, this would be a lot of fun.
Sure it would be a bit of a cluster and nobody would really know who to go for, but it would provide some interesting scenarios. Obviously, in the WWE, the "partnerships" that are briefly formed in triple threats are all pre-determined, but the same kind of mentality would likely go into this kind of situation.
After all, they'd be deciding amongst themselves who the weak link is and it'd be interesting to see who goes after whom.
Now to something that would really test the durability of these fighters.