If Kishi REALLY wants to make the Manga good, he'll kill of Naruto and let Sasuke live. To be clear, I don't like Sasuke. But that would be SUCH a sad ending if Kishi killed off Naruto and had him die protecting Sasuke or something similar. Maybe Sakura gets killed in the process or something. I'm a fan of sad endings. I think it takes a lot of guts for a writer to end their work in a sad way, so I admire it.