To me Naruto is one of the greatest Shonen of all time while also having some of the biggest missed opportunities in all of fiction I want to at least try my admittedly amateurish hand at closing those that bother me most.

To me Naruto should have been promoted to Chunin when he came back after the bell test. He should have been studying how to be a proper Chunin on the Tenji bridge arc clashing with Sy along the way. He should have been promoted to Special Jonin after defeating Kakazu. He should have been promoted to Jonin after defeating Pain. Tsunade should have promised him the seat of Hokage after his clone's showing against Madara, when the Kage were going up against Madara. And Finally it should have ended with Naruto being the youngest Hokage of all time.

But those are little gripes, my biggest gripe is with the whole of Boruto and it's power system. Karma overshadows and spits in the face of the Naruto power system. Naruto fights have always looked to will as the reason for a fight's outcome.

Zabusa lost because he underestimated Naruto and Sasuke's will to fight. And even though I dislike the ending, Madara Uchiha lost because he mistook someone else's will for his own.

Tsunade's will of fire. Might Guy's willingness to die for the future generation. Obito's will being weakened by the life he could have lived resulting in his loss. Everything was about will.