When Naruto figures out away to get the beast out and they give him all their chakra for just this one moment, one way or another I hope to see Naruto appear in his final bijuu mode form as a carbon copy of Hagoromo with the staff and the horns with the truth seeking balls. Then he is going to God stomp Sasuke. Its going to be like Goku and Vegeta or better yet when Ichigo made Azien look major weak lol. This is my theory though.