I'm a casual, but I had a feeling that no matter what they did, people would have a problem with the way they dealt it.
In the previous episode, when they are laying out the plans, Bran explains that the Night King is coming for him. Bran already knows what it is coming to happen. He already knows that the Night King will die. They built trenches and try to use Winterfell to hold out while they lure the Night King out to expose himself. It's pretty self-explanatory and I don't see the problem.
I don't have a problem with Arya killing the Night King. Her character establishes her as a rogue who would be the most likely to sneak up on him. The Night King sees her, and she does the knife-switch trick which was well done. I cannot think of another scenario I would have liked more- Jon Snow 1-on-1 with the NK? No. Terrible. The NK being killed by dragons? No. Terrible. The red Lady pulling some Lord-of-Light shit magic out of her ass? No. Terrible.
The point of the episode established that he was completely invincible, but I think that the story should have explained why the NK needed to kill Bran in person. That battle had been over had he stayed behind and killed Bran. Theon was the only person left defending him. A little bit longer and it would have been all over. If the story had just explained why the NK had to physically expose him it would have been great.
They could also have shown Arya going from the keep and getting close. I understand why people feel it was cheap and lazy for her to just shadowstep out of thin air. I also understand that people found the resolution of "winter is coming" to just be over so quickly. Had the battle been twice as long and gone into the next episode and spanned a lot longer with more twists and turns, it would probably have felt more justified.
But the way they build the NK up, there was no way he'd be defeated by conventional means. And I loved how he didn't say anything. No cheesy voice. No stating his intentions. And the WW were vicious. I was very impressed with how they filmed the battle, the way they used camera angles to show them in a World War Z capacity. Very impressive. When they are just storming the dragon. The way the Dothrakis lid blades just turned dark. The way they girl pierced that Undead Giant. The way the corpses suddenly awoke in the Crypt.
This was an amazing episode. More people could have died. I agree with that too. They did kill a lot tho. It was a total slaughter, and you had character changes in a meaningful way (Sansa and Tyrion), The Hound getting PTSD and giving up. Tilly got killed in the crypt too which will impact Sam.
I would have killed Sam too. Sir Jorah had an incredible end. Theon redeemed himself. The Dothraki are no more. The Unsolided were incredible. Another Dragon died. It seem slike that 90% of everyone died.
Jamie, Brienne and Podrick dying would have been heartbreaking. But Jamies plot is not over. But it didn't feel right how those 3 held out for hours on the wall. It was so crazy with White Walkers that there is no way they could have survived that long. Jamie is a handicapped fighter, and Podrick ain't that good. The unsolided general surviving and just being a killing machine non-stop. Maybe he should have died too. But Jorah was already the one who served that noble death. Kill too many characters at once and the effects of it will be reduced I think.
Let's be honest, this battle had a setup since Episode 1 and it was over an hour of battle. I think the context of the aftermath will make this episode better (if they do it well). Its not like everyone survived. It took everything they had and it was one hell of a fight.
I wonder if Sansa will get the throne in the end. I see Cersi commiting suicide. She is way to proud and crazy to let anyone but herself end herself.