An Afro tops my list of what I want to see.
Behind that Braids with beads.
Because I mean, if I'm gonna use boy or girl 4 this gen which I plan to, I want some hair to go with it.
As far as clothes go, hatless is always wanted. Shirtless boy, Hula dress girl.
Boys given more crazy attire than girls to make up for the limited clothing options they have compared to girls. Yeah girls get pants, dresses, short shorts, socks of all heights, tank tops, etc. It's no wonder the options for girls were so diverse. To remedy this, boys should get cool exclusive options like team "x" grunt gear, Pokemon themed hats, Tuxedos, Tuxedos + Mask, Tribal markings when shirtless, full body Pokemon suits a la Poke Maniacs, Space outfits, Lucha attire, whatever.
Just something that makes the male options plentiful and give me a reason to think about chosing it over the female.