> Just a collection of communities, one per ecosystem, is probably fine.
Yes, agree with that. It is also what I'd encourage people to do when they'd like to create new application types. It already happens for podcasting, but forge federation is another example.
Protocol-level improvement / issues with ActivityPub still need broader consensus.
Re: Discourse. Yea, there's a lotta JS in the app I'm afraid. There's an Android client, I believe, but then you'd have to use that 🤷