Don’t know if it’s really the remit of any social media platform, but Mastodon USP could be if it also worked as a catalyst of some of the stronger social bonds beyond online. “Social media promises an end to loneliness but actually produces an increase in solitude and an intense awareness of social exclusion. Texting and other technologies give you more control over your social interactions but also lead to thinner interactions and less real engagement with the world.” https://www.nytimes.com/2017/11/20/opinion/how-evil-is-tech.html

In fact a few times now I’ve heard people say the feature they miss (or would miss) the most from Facebook is the very well targeted suggestions of local events.