You are too cruel. ;.;
I'd just gotten that picture erased from my memory, too.
I like different takes on GB style. The way I see it, if they were a female, why wouldn't they want longer hair? I mean, sure, with someone like Luffyko, she probably wouldn't care too much and cut it short so it wouldn't get in her way, but Lawna appreciates a bit of hair (hello goatee) and might grow her hair out a bit. Kidd might go either way - punk out with shorter hair or headbanging fun with longer. I think cases can be made for some of them to have different hair styles. (Hell, even Mancock has long hair in some pictures which probably wouldn't be realistic since it'd get in the way of his fighting and he'd probably wear heavier clothing - the reason Hancock maintains longer hair is to hide her back and because it increases her beauty appeal… most likely.)
Short or long, I don't care. As long as the picture looks fine. Hell, Nami and Robin would probably have Zoro or Sanji-style hair since it's easier maintained.