Well, if curvy women are your preference, several people have vouched for Mei Plumblossom as their Pierce pick, while Cactace has a rather well defined figure for Hit. They've both yet to be offered as options and are actually both the curviest (Arguable with Lagurus for the Hit section though, Cherry aside) in the 6 Star tier, so they might be interesting options.

Mei is supposedly the strongest unit currently (or something like that) and Cactace has a great voice in my opinion. I'm a sucker for the shy type though.