This one is really, really easy. Honestly, I can't believe we ever agreed as an industry to do this the way almost everyone has been.
When worksharing is enabled and the first save creates your central model many people append _CENTRAL to then end of the file name. So when a local file is created you get: ProjectName_CENTRAL_UNSERNAME
It long, its redundant and the CENTRAL moniker does nothing for you. Instead use that space for something useful, something that provides valuable information about your Revit file. End your file name with a version number: ProjectName_2013_USERNAME
If you are currently appending CENTRAL to your file names, loft up this suggestion and I bet everyone agrees with you. An easy way to be, at least for a moment, the smartest person in the room.