I agree with your appreciation of Naruto's character, and your analysis of other people appreciation. However, I disagree with the way you want the thing to end. When I read a story, I like to see a minimum of logical consistency. Honestly, I never hide my opinion of each character in the series, or each clan. And I think that the only consistent ending for Sasuke here is to be saved by Naruto or some other people. See for example this example:
In a family, everyone is done with a kid because he is messy. Mother, Father, etc want to cut ties with him, but there is one person who still love him. Suddenly, something happens. The kid is arrested, or he is taken hostage by some bad guys. In this hostage or situation, he has a flashback of his entire life and everything he rejected. Then his family learn the problem, and see him either on TV, or directly, and know that he wants to change. Specifically, the family learn that he is very sorry.
I believe, that being sorry is what it will take for Sasuke to be redeemed, and this will happen. From my understanding of the story, the last arc will be a Sasuke redemption from Orochimaru, and all Konoha will help Naruto. Oro is not a human, he is the white snake itself looking for a vessel to dominate the shinobi world. Also check Sasuke vs Orochimaru to see what Sasuke said about Oro's true ID.
If Kishi kill Sasuke, I will be pissed off, and I will classify the series as BS. Also recall what Naruto said to Jiraya:
" I will create an owesome Jutsu to save him"