I miss RPAN! I could connect with my phone and stream any time, and there would be viewers, if only a few at times. Sometimes a lot though. It was great practice playing for an audience. Lots of great feedback and interactions, helped get me through the pandemic.
What's out there in the fediverse that's similar, if anything?
This is the first time I’ve ever heard something positive about RPAN. Different strokes for different folks, I suppose.
Idk if it is what you're looking for, but there is Owncast. It's a federated alternative to Twitch, including support for the Fediverse.
I like their directory page. Presumably that shows current live streams from different instances. Having one place to go to see all streams seems key, casual viewers will not visit lots of different instances looking for streams.
Peertube has live streaming, not sure if there is a community like RPAN though.