My current problems with Mastodon/GNU Social:
1. How do I move my account between instances? Like, let's say I'm on mastodon.social but then decide I want to self-host. How do I do that?
2. No language tags. It'd be useful to be able to mark particular posts as being in a particular language. the web is worldwide.
3. How do I just get an Atom feed of someone's posts? Not advertised in the UI.