While the system is neat, it has a singular flaw.
I am currently playing a character that doesn't use their mechanical, floaty name in public. Not even in their faction or to their closest friends. Yet, I cannot buy a license from the Vallaki Guards to sell, as per my faction job description, because it will just say the mechanical floaty name instead of the one they use IC.
I'm not sure how this can be fixed, but it is something to consider (and while I'm at it, could anyone suggest alternatives to this problem?).