In version 1.2.4 all four user properties are shown, which might work for some people or might not work for others.
Would it be possible to not force a user to have a lastname? In some projects users don't have lastnames, they only have one pseudonym.
The Username = login name should not necessarily be displayed. Wouldn't it be enough if the login name is mapped to the actual first name (+optional lastname) when displayed.
Always displaying the email address only invites spam. It would be nice if it were optional.