Yes, you read it right. Before you start speculating or wondering if I have a very narrow approach towards making a tall claim with this self-proclaimed yet logical thought, allow me to explain the aesthetics of this Bran Stark kind of vision my mind is having (including a few other people on the internet who seem to agree). Here's how one can draw the conclusion on the basis of what pivotal roles these main character might play in the remaining two episodes:
1. Arya Stark
As per Melissandre's prediction, a pair of green eyes awaits death at the hand of Arya Stark. Now everyone's obviously considering Cersei Lannister for this position, however, if you see, the mighty Khaleesi ALSO has green eyes. What if she indeed becomes the mad queen and is killed by Arya? Also Arya could secretly be working with Sansa and this could be their plan.
2. Jon Snow
Okay, the man has cheated death way too many times and he needs to die. He could possibly die while saving Dany from sister Arya and get killed as collateral damage and that will not only be a great twist to the story but serve the role of catharsis in the content cycle.
He will stay alive to carry on the Lannister legacy as the last remaining heir, maybe? Also if Sansa does get the throne, he could serve as her hand. Also there is an unsaid bond between the two anyway.
4. Jamie and Cersei
The guy left the one woman who loved him at Winterfell and is back to save his true love. The poetic justice for his 'karma' would be dying at the hands of Cersei itself, I guess?
5. Yara Greyjoy
Now she has to avenge the death of her brother and also take care of Euron.
A Cleganebowl is pending, so I guess he gets killed in there.
He already wants to dethrone Dany dearest and could secretly be plotting against her with Sansa.
Okay, coming to how Sansa fits the bill and where she comes in the puzzle. Now she is a major character in the show and if the story line has not allowed her to kill any major person yet, that means she might hold to a crazy plot twist, right? What if she warned Cersei of Dany's arrival, is in tow with Varys and Arya (who is also not trusting the dragon queen at all) and wanted the dragon and the army to be caught off guard? This doesn't sound garish at all, right? What if when the war is over, she ultimately kills Cersei and in doing so, brings the story full circle with the fact that Ned Stark's daughter kills the evil woman. Now Cersei vs Dany on the throne is an obvious choice, Jon Snow on the throne will be very predictable and boring Arya doesn't want the throne. It leaves me believing the clever and the much respected Sansa Stark rules the throne with Arya serving as her chief of military and Tyrion as the hand.