If I had an MMA Organization. Each card would have 10 guys from 2 weight classes (20 total). All the fighters would be sitting ringside. Waiting on an AI to randomly choose them and their opponent from their weight class to fight next. When announced they stand up and make their way to the cage. The rules would be UFC 1 style, no rounds, no decisions. If a fight goes 25 minutes without a winner. There is no winner, the match is a draw. The ref is merely there to keep the action going when it stalls.