I really hope sasuke doesn't become hokage but he will....sadly I have wasted years reading this manga. They're probably going to fight for the title, end up in a draw and both be hokage and share the title like madara and hashirama "should" have done at the conception of the village. Atleast this final battle might give rise to a tournament arc for the hokage title before it ends. Then we might see some match ups from characters who have been on the back burner for awhile. They already have a unified ninja alliance. They might decide on a giant tournament for a supreme hokage title to act as like president for the entire ninja community. So yeah...tournament arc.