Um, just speaking for me here...
This is more of a wish than a requirement... I think I might like to have my chest puppies...umm...I think the word I'm looking for here is "shortened."
Not that I'm big there...but gravity hasn't ever been much of a friend to me

.
It'd be nice if I could get small enough to make a bra more* optional* than currently...Even my fleet of sports bras are hot-and not hot meaning sexy, hot meaning sweaty nuisances that cause me to get heat rashes, itch, and occasionally break out in braline skin fungus infections in the local climate.
I dunno if this is as much about gender as it is about comfort...I do find it very embarrassing when some hetero guy gawks at them
( A glance is forgivable and possibly involuntary-I have to whip my eyes away from nummy random cleavage too, but my eyes are up here, dude.)
This is not a pressing urge though.
I like my basement nerve endings too much to monkey with them. My recreational area stays untouched
I do imagine the answer to your question's going to vary a lot more...androgynes/neutrois/genderqueer people seem to be more heterogenous.