A tag team game
This is not what you think it is where there are 3 or 4 toris playing at once. I was thinking that you and a partner or friend control one tori but not simultaneously. You start the move then your partner controls the tori the next turn frame and it has that pattern through the whole game with both of the teams. They should also both receive the win (or loss) and TC. Or whatever bets or tourneys they win they split the money. I think it will be fun and spice things up.