I’ve been thinking about this, because I want to visit the Pub without leaving Gemini. I’m also a big fan of the Indieweb movement.
So, naturally I think it’d be nice if Gemini browsers supported Micropub for posting and replying.
There are some issues I haven’t worked through: how do “sync” authentication between these two protocols? How might a Gemini page signal the correct endpoint for posting?
Maybe Micropub should be extended to support SSH keys for auth, and then you’ve basically already done the server part!
I was unaware of micropub, and after a quick glance it looks like a really interesting approach. I'll definitely read up more on it -- I'm sure there are some good learnings!