Well i mean people have their kinks and fetishes and some cultural differences also can play a role, i’m fine if you have options in a game.
Or like sometimes you can find that a person doesn’t fit your idea of beauty standarts, but there is something interesting and attractive still you can‘t describe why, i suppose it what charisma means.
But since you can’t show such “energy” with non written characters, visual part plays much bigger role. But in DT you are forced to play with Oblivion faces.