Option for auto-generation and mailing of a strong password
This is there. All you have to do is disable password field.
– Option to add a list of usernames which are not allowed to be used in registration
This is already added in UsersWP – Restrict Signups addon
– Option for the registered user to change the display name
Check the Display Name field in form builder. Its already added when activating the UsersWP plugin.
– Option for auto-generating username based on name or email adress
This is possible but only when the user get connected to a social network via our UsersWP social addon.
Setting to enforce strong passwords with a password meter in the registration form
We will be concentrating on this feature once UsersWP become a stable version. Thanks for the feedback.