I really liked the thoery someone here had that Mel will attempt to resurrect Stannis in episode 10 as he gets hurt from Brienne or Ramsay or someone else and instead of resurrecting who she thinks is the Lord of Light it resurrects Jon Snow.
Would be an insane way to end.
This has basically happened in the books. Mel talks about looking for Azor Ahai in the flames and seeing Jon and it's sort of unclear if she realizes what that means or if she's just frustrated her visions aren't working properly.
Anyway if they do this it lets them do a wolfhowl, cut to black as a reprieve from dragonscream, cut to black.
Fingers crossed the last two episodes aren't spoilery either.
Fingers crossed for the opposite tbh.