@dansup
I have a vision where basically a new user selects the Fediverse project and instance just by answering a few question about their preferences and then gets a complete set consisting of project, instance, user account and link to a phone app in one UI. After installing the app and logging in the account already follows their friends (if they named some and they were found).
Basically a super easy onboarding that you can tweak later if you want to move elsewhere with your stuff.