As long as the fediverse has a barrier to entry for most people of mandating choosing a server first, it will never become the mainstream choice.

Hey… that just gave me a small idea… what if we made a “flock” or “herd” of Mastodon servers? The group of servers would all federate with each other, have the same block and allow lists, moderation policy and teams spread throughout them.

When you make an account you can be assigned a random instance name within the flock. If your instance goes down you could still possibly log in using other servers? Main benefit would be spreading server costs and maintenance effort and de-centralized operating, but still keep a centralized feel to it?