The only way I could see Naruto having a part three is if Tobi wins the Fourth Great Ninja War. With this he would revive the Ten-Tails and put everyone under the infinite Tsukuyomi to "create peace." But absolute power corrupts Tobi even more and he turns the infinite Tsukuyomi into a never ending nightmare instead. The part three can be about how Naruto and a small group of people somehow escape from the control of Tobi's infinite Tsukuyomi and rebel against Tobi, Zetsu, Sasuke, the revived Akatsuki, and Kabuto in the real world and in Tobi's world. What do you guys think?
Note: I know this sounds like the Matrix, that's where I got the idea from
Note: I know this sounds like the Matrix, that's where I got the idea from