So I know I'm replying to my own, but this is just for everyone's knowledge. It would seem the hair, skin and acc are just not implemented in the game. Their menus mean nothing and even with save editing you won't be able to get anything into those slots. My guess is they were planned features, but seeing how it seems that 1.0.2 is going to be the final, final update and is only really fixing bugs, we are never going to get them. Now I could be wrong, but I have a strong feeling I'm not. Maybe some modder out there could add them in using the already precoded functions of the ui, but that is probably just a pipe dream.