Scaffolding variant for username only, independent of email

We have a lot of projects where username = email is unfitting, due to organisational requierments or handlig restrictions. While email still can be a required field in registration, the dependency of it as usernames forces us to change the generated scaffolds manually (UI and code)

Provide a variant where:

- username is independent of email and a seperate field when registering
- Login with this username (and not email) (and pwd)
- Change username in accordance with that, independent of email

Thanks for considering this, Michael