Outstanding questions:
Night King - no real explanation
I guess beyond being a weapon that got out of control there's not a lot to say about him. Who he was and why he want everything dead will probably be covered in the prequel.
Lord of Light - no real explanation
Do we need one? You can't scratch away at all the mysticism, not really enjoyable. Oh look, the wizard of oz is a fella with a loudspeaker and some smoke cannons. Besides all the prophecy stuff came true.
Jon confession - no scene showing it
Yeah would have liked to have seen how he got out of that without the unsullied gutting him immediately. Maybe Grey Worm is getting fed up of all the killing or recognises that killing him out of hand would mean war with their allies.
Jon off to the Wall - no mention of him being rightful king, his siblings just dumped him without a fight, why?
Didn't think it needed mentioning that Jon does not want the crown. He didn't want it when Dany was alive, he certainly won't want it after killing her and knowing it would mean probable civil war!
The North free - why not the other kingdoms?
Who's to say they won't try later...?
Tyrion getting to speak and choose the new king - why?
They wanted to speak to him, he nominated Bran - up to them to decline. Beside, 3/4s of them wanted him free. He's also the head of house lannister now.
Bran - just wtf! He was like an evil Dr Strange, at least Strange let them know that there was only one possible way to defeat Thanos. Bran just set everyone up to get "what he didn't want". Makes zero sense.
He can see the past and what's happening now - not the future, that was Jojen.
Bran again - what the hell was he doing when he warged for an hour during the battle with the NK at Winterfell?
Jon to the Wall - what was the point, there is nothing to defend against.
Yeah, that was a wasted opportunity. Should have had a much more active role in the fight other than being pure bait.
Honestly I could go on, the above are just a few quick thoughts.