I'm building an app builder (getmocha.com) and one of my favorite use cases I have seen is "small private social network":

some people are building custom, tailored social networks only available to their family, church, community, sports team, school, etc...

This was previously impossible but now AI changes that. I don't know if it will materialize, but a more federally distributed web with tons of small private social networks could be a future of healthy social