At this point I think theres a few things we can all agree on..
1: We already have this option with the world-transfer service. The only difference POSSIBLE is we would change our name AND keep our social standing(friends list, linkshells, black list, FC, things like that..)
2: Loss of reputation does not matter UNLESS YOU ARE ON PLAYSTATION* since it happens even easier with the world-transfer method as you lose your social standing and quite literally have a clean slate. The only way for anyone to uncover your new name is either you/someone telling them or someone recognizing you.
*: While name changing(either by world transfer or a new method) if you are playing on PS3 or PS4 it does not matter how many times you change your name because your PSN ID will forever be locked in your examine info. That is the only thing I know for sure that does not change.
So, I mean. If you really want to change your name.. The option is there. And if you think transferring worlds TWICE is too much then I say beggars can't be choosers.