I don't see any reason why there can't be ugly characters alongside pretty ones, boobplate alongside purely functional shit.
I agree 100%, they should look at Star Trek Onlines character/bridge officer customization options which in my option are the best in video games.
That includes STO boob sliders and sliders for other features, face and body and uniforms. You can even customize the appearance of their space ships.
You can have a young buxom super model character or an old character with a pot belly, eye patch, and a scar.