We like the new functionality now included from Core -> Lists –> Users. This provides a much easier way to view users and clean up data. As a feature request - we would like to have the ability from this list (or when you click on a user name) to be able to delete that user. As it is now, we can see the dirty data/test users etc. but it requires much jumping back and forth between this list and Profiles to truly clean up bad data.