When I let Census+ do its /who thing, it gets to /who Night Elf Rogue 60-60 n-a, and comes up with over 50, so it seems as if none get recorded (This isn't the only Class and Faction combo this occurs with).
Now I noticed that as it was doing this, it only picked up the names with the letter "a" in the name. I was wondering if this is intentional (as opposed to the letter "a" as the first letter of the name), as it would seem that a better way for the mod to search would be alphabetically. Don't ask me how though :O
Another one I thought of would be to let it search by zone as a defining character, since I know there aren't that many 60 Rogues standing around in IF (I hear that Tyr's Hand is a nice place to be...).
It still counts then and actually expects to double up by searching several different letters. The next version will have additional checks in place as well so fear not =)