It would be great if you could change your facial appearance.
Like the option you chose when you create a new character: colour of your hair, the way it looks, kind of mustache/beard/etc.
Because over time, you might want to change it.
For example because a char get older, the colour of the hair changes?
Of because you have an RP reason why you lost your beard?
My proposal would be to use the same predefined options when you create a character.