Having a family subscription and my family members ask me to create new addresses, because they cannot do that themselves. So now I've changed them all to "admin" because I don't want to deal with their email addresses.

But now they can also add new users and delete existing ones - the can even remove me, the primary admin! That really doesn't seem to the right way to do user authorization.

Please add an "Allow address creation" checkbox next to the "Admin" checkbox in the user popup. That would really solve a problem.