or maybe at least the posts wouldn’t be replicated, but there would only be one community, and when you visit it, posts for the community are downloaded from your primary instance, as well as other instances based on some configuration that makes sense.
yes, that’s pretty much what i’m saying. in the background, that is what would be happening, but on the frontend, the user just sees “communityname” and a bunch of posts that are pulled from all instances that have a community matching that name.