Here is what I forsee happening!
Sasuke by killing Danzou and gaining new form of Susanoo his chakra levels has gone up a peak not to mention he probably gained isanagi (if you know Kishi, he is sure to pull something like that out his ass) kakashi will hold his own against Sasuke but not before the fatigue sets in by overusing his sharigan to keep up with Sasuke and not before Sasuke bitches about his pain and how no one understands hi. Naruto will step in too save Kakashi not before bumping into Sakura and hear a final plea from Karin...we won't have to worry about Madara for right now, he is busy replacing his eye. Back to the battle Naruto will exchange a couple of blows not before Yamato steps in...(I know this is how kishi set it up) Madara come back and unveil his face without the mask!) This will be the shocker folks and answer a lot of questions! And now to sharigan user and the last akatsuki member will proclaim a war.if it plays out the way I'm thinking it...it could be more epic...but kishi will find some way to put kabuto/orochimaru into the mix! Knowing that man's ambition to have the sharigan he will attempt the impossible! A lil farfetched my opinions is...but its not impossible!