Yes the fragmentation is a feature not a bug. There are dozens of reasons why people might want to leave a community and create their own alternative version. With blackjack and hookers.
Combining communities should be a front end feature... Allow users to merge their views if they want. But it should not be enforced at the backend or federation level.
Eventually there will be third party apps which can do this merging in their interface if someone wants it.
I don’t think I’m understanding this right cause it sounds like you’re trying to make it more fun by adding more rules. If there are 20 groups that are all about pickles that’s fine they each like running things their own way. Eventually one group gets popular and that’s where the majority goes. I think your frustration could better be solved with something like tags where groups could choose to associate certain tags words that makes search easier like tag: pickles-fermenting-homemade-cucumbers and that could clear up search from people just wanting to share pickle Rick memes.
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