@waterhouse I also would like this feature.
Fediverse
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While it would be nice to be able to amalgamate some communities, I think a lot of the issue stems from redditors jumping into a server and immediately trying to recreate all of their favorite subs before understanding federation and searching to see if similar subs exist elsewhere (or considering if there are enough users to justify the existence of their niche sub when all of the communities are still relatively small and their content might fit in general communities that would benefit from more users.)
This is especially exacerbated because Kbin had a huge surge in growth while federation wasn't working and so it's users were relatively isolated from the established communities.
I imagine over time people will mostly conglomerate to the more active boards across different instances.