I've been doing some research and I think it would be a good idea to include hairstyles, though they must meet certain requirements. (It's not difficult)
First, the areas I've marked in red must be covered with hair, since all outfits, even those in the base game, have those areas without hair. This means the clothing is placed over the game's default model (the default image of Atla, the one with her normal hair).
Second, any added hair must cover the default base hair. Another idea I had was to create a bald Atla model and place the hair on top, but that would require modifying too many things (a lot: base images, outfits, etc.).
Bonus: Hair color isn't a problem; however, some accessories might look odd.
As long as the first two requirements are met, any hairstyle will look good! <3
I'm going to add 4 hairstyles for Part 4.
(Remember, this is just for aesthetics; the scenes and other images will have Atlas's default appearance.)
If you want, you can give me some ideas! (Hair Styles or Outfits)
This haircut is just one example of what can happen if it's not done properly.
Outfits I'm modifying and fixing.
I still need to give more details.