I don't know that any of these would totally turn me off. My girlfriend has almost all of what you mentioned below, but I'm in love with her anyway, because she has beautiful eyes & a beautiful personality, so they make up for all of the other stuff. She's also a bit older than me. I'm 35 & she's 42, so she loves the fact that I'm so in love with her!
if the breasts sag at such a young age then we have a problem when we grow up.
Of those I'd sagging breasts, I don't know I'm weird I kind of find bags under eyes/dark circles somewhat attractive O.o and I love girls with low self-esteem that are shy, I know I'm messed up. But I loves em.