A movie would be cool if they do it properly, and somehow I believe there is not a posibility.
Anime series would be more suitable, my bet is for Production IG Studio (Ghost in the Shell S.A.C.-the series, not the boring movies!-). They can do nice plots and CGI mechanical elements really well designed and animated, with crazy but not senseless action.
Novel will be also cool, expanding the backstory that made us shiver througout the WO series (thank you guys who are responsible of that). And talking about manga, well, I can help thinking in Yukito Kishiro (maybe too cyberpunk) or master Shirow.
Just dreaming...