Display Name Shown in Contacts

When our soft phone client authenticates a XMPP account it populates the contacts user group based off the Login name instead of the configured Display Name. Changing the login name is not an option as we use that to auto provision and it is a key component in the usage of UCP. Could you allow the ability to configure what variable is used to populate the group list for XMPP accounts. It would also be convenient if we had the ability to configure multiple contact groups that would populate within the soft phone client as well. At the very least can you pull the Display Name from the User Manager profile and notate it at the end of the user in the prosody_groups.txt file.