if want you want is a boxing tournament like the judo and aikido and those kinds that are always there, i can think of some reasons it wouldnt work, one of them would be:
The time of the matches is way to long and therefore it would cause to many people to quit because of it.
Maybe if the total fps were less it could work and it would be nice if you could add dm because it would make the game more entretaining because you would have to worry about no getting your limbs ripped off from your body.