It would be nice to filter report columns by no data. For example I would specifically like to filter the last logged in or first logged in columns by empty, so that I could easily see and reach out to users who have never logged into our LMS instance.
The Logins column doesn't quite work for this - we have a few users who have attempted to log in but failed, so logins has a number, but "first logged in" is blank. I really want to be able to easily catch these folks and send them a message!
The Users report has a Logins column, which you can filter for Logins Equals 0.