I'd like to see a "gladiator" system that was for sanctioned 1v1 play. You sign up, and that throws your name into the mix. For, say, an hour, people can put money on you. Your matchup is only determined AFTER that hour is up (keeping people from fighting an alt/rigging the fight for profit). People that put money on you get winnings if you succeed, and you get a cut of the total gold won due to bets placed in you.