Also found in a !fedibridge@lemmy.dbzer0.com post by @biltong@piefed.co.za : https://piefed.co.za/c/fedibridge/p/22233/post-on-r-buyfromeu-on-the-recent-surge-of-users-to-piefed
I like the way Voyager does it:
DeltaChat also has a very easy onboarding process: you just put your name, and that's it. The app creates the password in the background and allows you to switch servers easily. That really helps with onboarding new joiners.
Piefed.zip could be a nice default choice. If there are others you see, feel free to suggest.
I think point 4 is critically important. It's great that the fediverse has kooky instances but lets not throw new users to the wolves by referring them to "random" instances.
IMO, pre-select a half dozen good choices, discard the third with the slowest response times, make a random selection from the remainder.