Eh I wouldnt think he'd do that. I read his interview, and he said that most of these characters are just pawns to the sotryline, for example, the ninja thing was only a pawn so he could write his story better, it was originally supposed to be about magic and demon foxes. Also, Sasuke wasnt ever planned to be created, and Its hard to explain but he resaerched alot of plot stuff and techniques for writing so some of this stuff is just there to make readers read stuff more. I would like this storry if it wasnt for sasuke, itachi, madara or neji.