I'm having a rather annoying delemma here; when it comes to hosting federation servers, which one to go for? Pleroma, mastodon, Osada, or Hubzilla? Or in that case, a few of those? I know some instances that host several different platforms all under their single domain; mastodon.host is one. Don't know of any Osada servers, though; but then that has a lot of features that I'd not be using, anyway.