If you signup to social media it will pester you for your email contacts, location and hobbies/interests.

Building a signup wizard to use that information to select a instance would seemto be the best approach.

The contacts would let you know what instance most of your friends are located (e.g. look up email addresses).

Topic specific instance, can provide a hobby/interests selection section.

Lastly the location would let you choose a country specific general instance.

It would help push decentralisation but instead of providing choice your asking questions the user is used to being asked.

Activity Pub has a few parts, Lemmy implements the Threaded message part.

Mastodon implements a short messaging (posts) part. Meta’s Threads will implement this.

KBin implemented both parts, within KBin you’ll see microblog as an option for magazines (communities/subredits). This shows either ‘posts’ made to the magazine or posts with hastags associated with the magazine.

The posts and threaded message parts have overlap in how they work so mastodon users can see certain threaded messages and comment on them.

KBin/Lemmy should provide a combined local view for duplicated magazines/communities across the fediverse. Treating the concept like a hashtag.

The point of the fediverse is to distribute content so no one has a monopoly. People squatting on communities/magazines don’t understand there is nothing stopping people creating one on a hundred other instances.

Each kbin/lemmy instance decides to follow magazines/communities from others through activity pub and stores it locally for the instance.

Having the UI retrieve all local posts with the same magazine/community name (e.g. m/star_trek@kbin.social c/star_trek@lemmy.world). Wouldn’t be hugely difficult, I believe Kbin uses postgres database as the local store and suspect it would be a tweak to the SQL query it runs.

Even if that wasn’t an option, there is a means to get all of the magazines/communities from the kbin UI/lemmy REST API. As well as retrieve all posts for a specific magazine/community. So you could do it entirely in a web client, for KBin it would be more work.

The combined view wouldn’t change how you comment on specific posts. The issue is where do you post and what view would take dominance (e.g. if a magazine had themed itself).

The solution here would be to default your local instance if it exists or the instance providing the most posts/comments. Perhaps with a drop down so users can choose.

I would also configure things so instances can select a site wide default if they can’t moderate it effectively. For example pushing all posts to the star trek instance rather than local magazine with a mod who is MIA.

This would remove most of the concerns users have about the fediverse, since they wouldn’t be confronted by different instances. To them the fediverse is <insert instance> it would also encourage distribution of content.