Imo it was totally unpredictable what was going to happen...at one point I wondered how there would be 3 more episodes bc it seemed everyone would die..especially when he brought everyone back. I'm not sure what else you wanted them to do, unless you wanted the NK to kneel to bran or get in the crypt and raise all the dead stark skeletons. Either everyone was dying or someone was killing the nk in that episode. The best killer on the entire show whos been dropping hints about "death and not today" for seasons is unbelievable? Nah.
Now theres a limited army to take on what's south.
The episode was great entertainment. The complaint about tossing out a core theme of the book.
The only way the night would be defeated was by azhor azhai and his sword lightbringer. I was discussed too in the show in season three.
Instead that whole theme is just gone.