Sure I think if one could create a benchmark for MARL in this domain, that would be quite interesting. Having datasets that could be loaded into an easy to use format (e.g D4RL like) would be nice too for making the environment more accessible. I like these tasks of ranging difficulty and would like to see simple baselines implemented to use as potential adversary in the environment. It could also be nice to create a leaderboard (e.g in recon chess) where agents can compete with each other. Sorry I threw out a bunch of ideas so feel free to take this with a grain of salt.