I don't like using a 10-point system because it's so ambiguous, but I guess I'm talking about going from 5-8 to 8-10. The way I mentally do rankings is Ugly - Acceptable - Exceptional, so going from Acceptable to Exceptional.

(For the record, I try very, very hard to treat everyone equally, since the influence that attractiveness has on human behavior is something that I'm aware of and think about constantly. Hence this discussion.)