Mecha wrestling could work here
Conversation
Rocket… punch
Then punch rocket does a lap around the bleachers
Give the cheap seats something to hope for
Outermost ring should be too-cheap-to-meter free seats
Or freemium. Pay per minute to go closer in if the action gets exciting
Also drone quidditch
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Drone-racing course. Spiral up, then dive down, 90-degree turn to the goal-line to win.



