So let’s take this actual example: There’s !canada@lemmy.ml and !canada@lemmy.ca. They talk about the same thing, but are treated by the current federation implementation as separate instances.
How would you feel if there was a moderation feature to import another federated instance’s community into your own, so that the posts from the other instance automatically show up in the same feed? That way, you only have to subscribe to one community on one instance, but you get content from multiple instances. I’m not talking about crossposting or mirroring/duplicating posts between communities, only displaying the posts from another instance the community’s home server federates with, with moderator discretion.
They are really cool ideas. A like most the fist one, as this makes more clear that there are more than one community, and as @dessalines@lemmy.ml points, communities have their own bylaws and people. And, users can use it to aggregate arbitrary communities, lets say, unifying all Sci-Fi instead of only Star Trek.