You should not need to use a Fantasia for minor character customizations.

[Arngrim_Greyashe]

Just Changing hairstyle does have a quite drastic effect on the look of your character, moreso than to say a slight color change in the skin. I have personally applied a a breast reduction on this character which also was hardly an difference... In fact i believe at had no effect on some armors too. Height again, here you are going to have to line your character up to someone else to really notice it, and for voices it's mostly just grunts.

I don't think you understand how adjusting anatomy works. You can't change your skin color in real life, with the exception of tanning, and that's temporary. If it were possible, I'm sure extensive surgery would be needed. Speaking of that, changing your height would also take extensive surgery. You can't just expand your bones and muscles. So no, these are not minor changes and should stay out of the aesthetician.