How about TRS and TRSers? good because it's confusable with TSR. Not a knock on NTL but having a new name kinda opens it to new people who weren't part of the old system.
Or, we could go with the theme of the admins and be called fairies. That would be handy. Imagine seeing someone in a game store that you think you recognize from online. "Hey, are you a fairy too?"