I'm pretty sure I'm in a minority here, but I like that lemmy.world is so huge - and think it's both positive for the lemmyverse and an excellent starting point for new users.

It ties into the new user experience a lot: lemmy.world has a large userbase so most communities will already show up in its All. It's consistently had new registrations open where many others have closed during large sign-up rushes. It has a thoughtful admin team experienced with running services like this. It's likely to be around for the very long term and, short of some DDoS attacks, should be fairly reliable.

I know having instances this big is objectively bad if you're measuring things like how distributed or resilient to disruption the Lemmyverse is, but I think the positives outweigh the negatives on the whole.

If I'm honest, I think the best way to implement an "I know which instance I pick isn't that important, please just send me to a random one" feature would be to send the user to a random one of the top 5 largest instances. I stopped short of suggesting that because I know it would be deeply unpopular though - enough so that it becomes a bad idea on that merit alone.