It's a narrow range of funbags that stay nice long term.
It's called not having kids in most cases. And if they are in the C range (aka perfection) invest in good sports bras. I never complain when my wife wants to drop $40 on a sports bra every few months. That's an investment for my future right there.
Face is certainly important, but when you get to falling in love and stuff you can ignore minor issues there.
Legs and derriere... Well I've always liked shorter girls. My wife always wears heels when we go out as I'm a foot taller. If they work out the heels will put average derriere and legs in a good light. I find neither important when fun time starts though.
With that said, cankles would be a deal breaker.