So. Cersei is going to trade her baby to become the Night Queen. Jamie will have to confront her and try to break her out of the spell. He will die in the attempt. I think Tyrion will be captured after she kills Jamie(they'll meet her together), but will ultimately be saved in the finale.
Theon is going to bring the Golden Company to the North, in his moment of glory, providing crucial reinforcements in the finale.
The Hound is going to become Azor Ahai, because it has to happen.
Bran is going to Warg into Greywind, and a Dragon, by the end. Ayra will bring Nym to the finale. Merra will return with Howland Reed, for something plot crucial. Even just to help legitimize Jon, or to make Bran realize that he needs to help his family and stop being emo.
The predicable characters will survive the CGI finale, get their titles/lands in a Star Wars ceremony, and Dorne/High Garden won't be mentioned at all.