The general idea is good, but I still believe the best solution is the ability for Communities to follow other Communities. That is essentially a fully automated version of this sibling proposal.
This has been explained in great detail by ‘jamon’ here:
This basically lets Communities opt to federate directly with other Communities, abiding by the same network dynamics as the fediverse at large, I.e. cross-network moderation by (de)federation.
If you are an active user (not moderator) of Lemmy, the requirement for this becomes apparent almost immediately. One of the biggest strengths of these forum are communities-at-scale. Being able to easily post and interact with large groups of people is the benefit to the user that makes Lemmy (and all other social media) appealing.
As a user, I recently wanted to post to AskLemmy. Almost every single instance has thier own separate AskLemmy implementation. Naturally, I’d tend to post to the one with the most users. But inherently, I’m missing the majority of users by only being able to post to one. I.E., I posted to [email protected] (which had 3k users), but by doing that, I’m missing out on the users from lemm.ee, behaw, lemmy.world which in total are far more than 3k.