My general concern here is that the ideas are generally enormous, it is super hard to break them down into small pieces.
I do find the idea of federating interesting. A possible concrete implementation could be:
- Allow Discourse admins to federate a category.
- Users on mastodon can then follow it, eg follow:
announcements@meta.discourse.org
- When new announcement topics are created, a new post is federated with an excerpts and link to the original.
- As users respond on discourse, new replies are federated and attributed (as replies to original topic)
- When someone on the fediverse replies, a “shadow” post is made on the topic attributed to the poster on mastodon.
Something like that is at least small enough to properly fit in my head.