Not a bad finale; and its effect is quite welcome: I’m mildly interested to see the show’s vision of the finale chapters but don’t mind the waiting time at all.
And the 6th season has accomplished something quite remarkable: I am now curious to read the next book.
Anyway, some thoughts:
Why is the show still acting as if legitimacy changes anything in the world?
Everyone we have seen sitting on a throne in the show got there by violence. The ones who led due to tradition or the rules of the land were pushed off their pedestal by others.
Realpolitik rules Westeros and Essos, not an idea. That, of course, might change - but any idea worth following for more than one person needs to be more powerful than l’état c’est moi.
Besides, if Jon learned anything in the past months, it should be this: He is not a king. The job he’d succeed in is Lord Commander of the Queensguard.
He has the abilities and the character for it: a good fighter, loyal, trustworthy, thruthful, dutiful and too stupid and unimaginative to ever participate in a coup (without giving it away the moment he needs to act innocently).
In that role, he can even be the much needed voice of conscience without getting into the way. His queen is going to need him doing this. Sansa is too much Littlefinger by now ;).
Rhaegar & Lyanna:
What I still want to know is why? Were you both so stupid that even Romeo & Juliet would shake their heads in disbelief? Or was Rhaegar on a “holy mission” to produce the Prince that was Promised like other Targaryens before him but unlike them (possibly) successful? And did Lyanna know?
The Night King:
It’s almost too late to address the motives and desires of the White Walkers, but not quite. I hope the show sees more in them than a force of nature or Childrenstein’s monster on the loose.
Their motivation should be more complex than the average comic book supervillain, and there are hints enough to give them depth.
The Collapse of the Wall:
That was too easy. I’d like to know Plan A. Unless the Night King is a greenseer and the future is set, he could not have predicted to have a dragon handy just in time to break the Wall.
If the future is set, if all events are preordained, well, than this is truly a depressing story, and we have only seen victims of the machine moving everything in its place.