Keeping the verse alive one way or another goes with the spirit of fediverse. The case with .world does highlight the pitfalls of having an instance so big, but it highlight its success. The pitfalls can also be mitigated by having many other instances, big and small (e.g. sh.itjust.works, blahaj, db0, sopuli, lemm.ee, all the feddit instances) that although they have different names, they share the same banner of Lemmy. This is highly successful with Mastodon.
Speaking of the same banner, wouldn't it be great to have many different link aggregators like lemmy, mbin, piefed, and maybe others to share the same class identity or so instead of what they currently are? This way, they all won't be treated like competing standards despite being on their own code base and feature set. Maybe with this, forks of the original Lemmy code can be created to address the stuborness of the devs.
Yes, I am aware ActivityPub is supposed to achieve just this, but it also does a lot of things that are not relevant and even confusing to the specific use case (e.g. link aggregator). Also, newcomers would just get frustrated with all this tech stuff and ran off to the warm embrace of big tech.
Damn, you did not hold back.