On a vaguely related note, I think a really interesting way to do a proof of concept of this would be to demonstrate its use in a social media game.
The old adage that everything on the internet truly only takes off at first as either games or porn is still somewhat relevant. I think a mastodon-adjacent but very much not mastodon-specific form of social gaming could be really fun, demonstrate some ideas, and bring a different set of people to the fedi.