Help me understand .. why i can not change my name when changing gender with Fantasia.

So .. say you got a male toon with a butch name like Dug or Crom or Mr. Big

and you want to change your gender to female using Fantasia...

Does it not seem odd to see a pretty little Miqo'te name Mr. Big

Come on I can not be the only one to have a problem with this..

Is there going to be a change to this before I use Fantasia ?