@realcaseyrollins
I don't think that it is actually a fork, but I like the way #Purism set up their Mastodon server.
They completely disabled DM's, they instead set up a matrix server so that all DM's can be encrypted.
They also disabled the server and federated columns so that you only see posts from people that you follow. That way, easily offended individuals do not have to be subjected to posts from people they do not like.