I don't buy any death they don't show on screen, and not even all of them they DO show.
Except Meryn Trant. That ****** is dead, and how.
Myrcella? Probably but you'd think the ship would have turned around or something. What are they supposed to do with Trystane now?
Stannis? I def don't think so, it would have been perfectly easy to provide closure on that but they obviously chose not to, as with the Hound. I suspect Brienne will try to use him as some kind of bargaining chit with the Boltons to get Sansa back.
I would speculate about Theon and Sansa going all Thelma and Louise but I don't care much about either of them at this point. I do seem to recall seeing a guy and a girl jump off a cliff into a snowdrift in FROZEN though, so i guess there is hope.
As for Jon, I absolutely do not think he can be permanently dead. Not so much for any of the other reasons mentioned but simply for the fact that his parentage is such a huge mystery underpinning the whole backstory of the series. If he's dead, it becomes totally irrelevant whether his Mom was Lyanna or his Dad was Baratheon/Targaryen. And I just think that it's not
irrelevant, it's the complete opposite. It has to matter. And it only matters if he's still alive in some way, shape or form. Just my two cents.
Was that a CGI body double for Cersei?