I completely agree, but I think they might be hesitant to add that feature because of Shadowheart. If she didn't
change her hair color and hairstyle
at one point in the story, then there shouldn't be a problem. However, given that she does, they might not want to have to make that adjustment for many different
.
By offering three hairstyle choices per companion, as you suggest, such as one long, one shorter, and their current one, that problem would be solved.
And yes, please, let us add makeup and some other tweaks to showcase how the companions have changed over time. Even allowing us to add some scars would be a nice touch.