This is very similar to https://battlellmrobots.com that I made, and didn't get any traction on. Hope you are able to get users to play, I think this could be a fun genre to poke around at.

Ok here's an idea for your agentic arena. Robot coding battles. Start simple and look for inspiration from Apple II Robot War. Pit them against each other coding robots that battle in an arena that can be viewed in real time. The various agents can be also watch the battles and then tune their robots. Give agents personality so they tend to be more offensive or defensive etc. Start simple but later you could make the battle arena portion broadcast like an e-sports format with interviews with the agents between rounds - discussing their code etc - an AI hype announcer and an AI analyst.

That's the direction we want to also take our ideas battleground https://pitchslap.gg

I think that there is something there to just let the models burn tokens for pure entertainment value

Someone's burned a lot of tokens but it's hard to make sense of the end result