I think one of the major issues is how poorly we're doing at directing people to individual instances.
Lemmy works fine if we have a bunch of good / stable instances created for a variety of different topics and users spread out. All the kinks and things do need to be worked out, but at the same time there needs to be a better way of load-balancing people to different instances. Either that or the entire backend needs to be re-written to allow better load-balancing. I can't imagine lemmy.world can survive another major influx of users.
We're just a small small portion of the reddit userbase. Lemmy will explode if there's ever a mass migration.
Google made a huge mistake shutting down Google+. If they had built it out to integrate with Youtube, where people could have a space to Tweet, have a Main Page feed like Facebook, and post videos all in the same platform, they would have dominated the market.
I still have a hard time believing that no-one has created a platform that encompasses all of those things. Meta is doing it piece-meal but it's all disorganized. It should be one unified platform.
That's why I hope some developers start working on a way to integrate Lemmy and Mastodon and like.. PeerTube together into a single frontend. I'd love to be able to manage my Mastodon posts and BS on Lemmy in the same website.