Create new user with copied settings from another user
When creating a new user it would be useful to be able to create it with the same settings (group/role membership, quota, etc.) as another user. Personal information should of course not be copied.
Adding a 'copy' icon on each row in the table list and a 'copy' button on the single-item page could be the starting point. The regular new user dialog could then be used and modified to bring in the information from the selected user.