I'm reading threads on Reddit with people that act like it's the most complicated task ever, like come on just pick anything. On one hand I guess it acts as a filter of sorts but on the other it's a fact that it'll slow down adoption. Maybe there should be a text in big friendly letters that says it's not a big deal, just choose any and get started. Maybe even a randomised button where it just selects it for you? Maybe it could ask a couple of questions to the user to determine the best suited server?
The other big one is the whole part about having communities existing under multiple servers. It's nice that I can go subscribe to communities from any server but it does complicate things a lot if I just want to see everything from subject X, and fragments the userbase further. Right now it's ok because there's only a few servers and communities are focused on large topics but down the line when Lemmy gets big and we have communities for niche topics, it'll definitely be a headache. There needs to be a way to simplify this even if it's on the user's side.