This post assumes you have a basic understanding of what Lemmy and Kbin are. Which, in turn, assumes you understand at least the concept of federation.
The Issue Currently, the way Lemmy/Kbin (which I will refer to simply as “Lemmy” for the rest of this article) work like this:
Cool, so our user can access content from both instances. They go to Instance #1 to talk about transporation, and Instance #2 to talk about animals.
I would have thought “community groups” is the fix - let people group communities together, so you could have all Pokémon or Star Wars communities grouped or, simply, all communities of the same name/purpose.
Works fine as just a private consolidated feed, might get trickier if these were made public, so other people could subscribe to your curated group, because you’d then end up with dozens of pretty much the same thing.
edit: so the private feed would, essentially, be something like Mastodon’s lists, for example.