a fair point but the series is based around Naruto becoming hokage so even if hes not thr right person he will probably get it
As for your second point, peace has become a very important theme so you may be right
Remember, the original reason why Naruto wanted to be hokage was to become acknowledge by everyone in the village.
he accomplished this without being Hokage.
Then, Naruto's reason to become hokage changed from being acknowledged to protecting the village.
He is doing this without being hokage.
If anyone is to be hokage, i think it should be shikamaru. Now wouldnt that make a big twist
Naruto does not need to be hokage to be a hero or to be important. Maybe Naruto will realize that and choose not to be hokage. Wouldnt that be a nice ending.