What we’re really lacking on the ui end is a way to see groups of identical communities that are on different federated platforms. Hence the idea of a dom-lemmy. The way it would work is lets say you search for a cat community called “cats”, there’s at least dozens of them out there already. Instead it would return the cats dom-lemmy, with the option to either drill down to a specific instance, or to merge all sub-lemmys called cats into a single view
I’m not saying those spaces can’t be used. Ideally each instance would end up with its own set of popular communities that have become the one true community. But it’s a much better user experience if every instance doesn’t have all of the communities from every other instance duplicated.