I was sent here by one to the mods to make a post. If there isn't a reset time on changed named i.e. after a set amount time after you've changed your name the old name will become available for someone else to use eliminating the previously known as in the friends list. I believe Old School Runescape has a 2 week timer set on it and I propose that the powers that be implement the same here.
Many thanks, Phil.