Come on!=D Don't you at least want to see how he handles being hokage and who he ends up with?
The great ninja nations are going to be united after the war, the position of Hokage will be obsolete after the war. Besides, Kishi already said that the next time skip will go backwards to focus on Minato's rise to Hokage. And honestly, who naruto ends up with is by far the most unimportant/uninteresting detail of the manga.
IMO, Oro is a pretty lame villain at this point. I think a better arc would be if Yamato came back but he was all messed up from the hashi DNA and becomes a Yamato/Hashirama/Zetsu monster that can repress the chakra of the ninetails and use the wood release. And since this would be a beefed up Yamato monster thing, you might even be able to put him on Hashirama's level (hypothetically).