Dumb is intelligence so leave that to a different thread.
Heck, it could be Wizards agrees with this line of thinking as Physical Attractiveness is not part of Charisma in 4e. But there has been a stat for it, comeliness. And other games like White have had one as well (appearance).
Comeliness gave you penalties based on your race.
Hmmmmm I wonder why that died
White Wolf games work with "attractiveness" because a) it's one of many non-combat stats and b) the games are, by and large much, much more robust outside of combat. D&D, when it even has non-combat rules, leans towards "Well uh roll this skill ok done back to killing orcs!" The emphasis has never been on big political subterfuge (unless it involves killing kobolds who are using mind control).