No, really? I never noticed!(I think on the evil pages I read something about them getting bigger and bigger, though I don't pay that much attention. Has something to do with Oda's wife, someone said)
Concerning the Strawhats... uh... NG or CG all through, I guess. Can't really be LX, since pirates aren't lawful. But I can't really see a valid argument against any of them concerning the good (okay, maybe the girls, sometimes, but generally their also good most of the time)