Why should Sasuke have the privilage of having a hand in doing anything involving the system after all he's done? He's had privilages all his life, but chose to throw it all away for power, power, and more power. He only ended up wanting to "change the system" because Kishi wanted him to look good after not being able to decide just what to do with him, even having Sasuke be pardoned of everything he did, thus not even having to take responsibility for any of those actions either. Even with Sasuke learning about things later on, he talks like he was completely controlled and manipulated by the system when the fact is that it was still his own anger, ego, and lust for power that drove him and caused him to make the decisions he did, but now, as usual, he's just trying to pass the blame onto someone/something else.
Naruto should've simply had a reality check and be able to change the system himself.
Sasuke never wanted power. He wanted revenge for his clan and eventually his brother, and to make sure that what happened to them would never happen again. He was never selfish, he simply had limits to what and who he cared about, but it was never about himself.
Even if Sasuke did do all this for power, you simply do not base an ending on putting a relevant and important character into a blind corner just because you'd like to see him punished. Taking his privileges away simply because you think he deserves it is no better writing than Kishi. For example I think he is for some reason?, punishing Sakura with this ending. It's so ironic to complain about anger when, I might be wrong, but with the way you are explaining things you seem very angry at Sasuke.
