Would it, or would it just be Naruto growing up, and learning -that he's not a god and that he can't save people from themselves if they won't let him? Naruto's capacity for forgiveness is admirable, and it makes him unique, however all of his opponents, the ones he's converted after kicking their ass anyway, all of them felt they were doing the right thing (Nagato), or at least wanted to be saved deep down, (Obito).
Now, granted, Sasuke feels he is doing the right thing, however I don't believe he wants to be saved, or even thinks that he needs to. If Itachi couldn't change him for the better, and Hashirama couldn't either, maybe he shouldn't be changed.
And I know, I know, Naruto succeeds where others fail. I'm just saying it would be refreshing for Naruto to fight someone that is impervious to his reasoning, someone that needs to be put down.