Sasuke decided that he wanted to become Hokage in one chapter, and that pretty much made the past 300-400 chapters useless. Naruto: I'll save you from darkness and bring you back to Konoha! No worries, Sasuke does that anyway.
That exactly how I feel about Sasuke wanting to be Hokage and Tobi being reveal as Obito(dumb overrated ninja, make us think he was a true villian before seeing talkninjutsu with Kakashi).
Now if Sasuke try to become Hokage through power to build his own ninja system(that Naruto don't think is the right way to go) and just fighting with Naruto right now to take control of the Ten Tail for himself and than Sasuke get half the ninja world on his side and the other half join Naruto, to have a war for absolute power, than Naruto could make sense again. Until than Naruto is garbage now and Kishi is lazy bad writter in my opinion(with this back at the chunin exam, Sasuke fighting against the only guy left in the world, who is similar to him, happy go Lucy nonsense).
I mean Sasuke will never get voted to Hokage(even if Naruto want him to, because it not a dictatorship), after leaving with Oroachimaru and now surpose best friends with him. Killing a could be Hokage in Danzo and attacking the Kage summon cause Tobi Obito told him to. So if Kishi don't find more of a boss ninja way to have Sasuke become a kage, instead of just the idea of coming back to the village to have a tournament for Hokage, Kishi will just be redoing what he already did, because he ran out of idea's.