Yes you're probably right.Honestly there would be no way Sasuke could ever become Hokage after what he has done. Danzo was Hokage, and yeah he did shaddy stuff, but Sasuke killed him and the village knows that there would be no way they could trust him with power after what he has done. Plus A still hates him and in not likely to have a change of heart in his attempt to kill Sasuke for all he has done, even making him sac his arm. Everyone in the village but Naruto has no faith, trust, or want Sasuke, so in your theory with Naruto dead he would have no one defending him. Kakashi knows Sasuke has to go and there would be no way Sakura could talk people out of it.
However, many of the people who hate Sasuke, such as A, may not even be alive by the time another Hokage is appointed.
As much as the leaf village hates what Sasuke has done, Tsunade and Kikashi, as well as Shikamaru and the other characters of the same age (who will soon be responsible for Konoha) will be able to forgive him. It is also possible that a death-sentence could be lifted in the event that Sasuke turns against Madara and helps to turn the outcome of the war.
Killing Danzo wasn't such a big deal. Not many of the leaf Ninja trusted him anyway...
And we are yet to learn how responsible Madara is for Sasuke's hatred. When Madara is destroyed it may be that a cloud is lifted from Sasuke's mind. It would not surprise me to learn that Madara has been tricking Sasuke all along, not just with words, but also with a greater power. (Madara has controlled the 9 tails and we know he is responsible for Nagato's fate and power).
It could be that Itachi's gift to Naruto is a way of making Sasuke realise that he is being manipulated. We'll have to wait and see. For now Sasuke is too proud of himself to ever imagine that he is under say, some sort of illusion.
But in the event that Sasuke is not himself, then that will also be taken into account. It is not what Sasuke has done that counts, but who he becomes by the end of the manga. And I can't imagine a Hokage with better credentials.
He is about as smart as Shikimaru and as strong as Naruto. If he becomes a good person, yeahh...
I can easily imagine him becoming Hokage.