Hide the SMS phone number in lists and forms, disable the buttons to
change it if the property is read-only, add an option to define if the
user is asked or not for SMS phone number at login

Configuration and implementation to allow the users to request the
deletion of their account if they don't accept the disclaimer or in
their settings under the disclaimers.

Implement relation between identities with a configurable role,
administration to manage the roles, and the relations in user
management.