That's why I said Naruto would die in that case(its always an option).
If juubi comes back to life and Naruto stays alive then it can only be plot no jutsu unless Juubi can revive dead bodies and wouldn't stand by Tobi's side. All bijus have entrusted Naruto, since they are the ones who form Juubi then they won't forget Naruto and its for sure. If Juubi comes out it will be fighting by Naruto's side.
Also if Naruto gets the control over juubi then it would be useless Kishi putting him up to fight Sasuke. Perhaps at the end bijuus will be no more and powers will all disappear(I mean those blessed eyes) and the world will be all normal and piece will embrace them all. Powers make people to become arrogant, since someone does not have power then it will be hard for him to become arrogant.