One thought that’s already occurred is more dedicated efforts to grow communities that are useful to minority individuals or may attract them to use this site.
That sounds like a great idea, although not without its challenges (as an example, finding people both from those groups, and also willing to invest time into the community as leaders/mods). It would be very hard to found a community like that without finding someone who closely knows what that community needs and what would draw the group to a given social media platform; but if the process was done right their participation would certainly be a big draw for the site!
I didn’t realise this was a Political Compass thing but the colors of the backgrounds check out