Yep. He has definitely has a distinct style of drawing when it comes to the female form. He does it with such aplomb though. I don't think that his female leads' similarities are rooted in lack of imagination so much as artistic license. Shinunora from Gun Frontier possesses the "look" as well, yet I find her to be beautiful in her own right. Maybe by designing all of his female leads with a similar visual style, Leiji Matsumoto (purposefully) is causing us to look at them from standpoints other than the physical. Case in point: To me Maetel and Shinunora are nothing alike, yet they look very similar.
No matter where you go, there you are.