Greg, do you think Oda's wife has a say in certain designs?
It seems to me that characters like Ace, Law, Shanks, Zoro, Sanji, Sabo, Drake, Smoker, or even King and Doflamingo, all seem built to be the perfect male specimens. Not only from an exterior point of view; also their backgrounds seem designed to suit the feminine taste. And the story between Rayleigh and Shakuyaku could very well be a subject for some erotic novelist.
All these elements make me think of some female "editor" trying to counter-balance the pervasive fan-service aimed at males, or to appease the female audience.