I agree that the whole "bend the knee" speech from Danny seemed out of character. Suddenly she's acting like her brother, full of entitlement.
She did back off a bit, but she's not the queen of anything at the moment and needs to earn loyalty rather than demanding it.
Jon is such a blunt instrument. His caveman-like performance didn't help. Fortunately Davos did a little better, but come on Jon, do a little selling. Shake the hips...bring out your inner Elvis. If he had 1/4 of Euron's flair he'd be golden.
What's with Sam Tarley? I believe that the ArchMaester didn't randomly assign him some crappy scrolls and books to translate, but instead selected everything he has on the white walkers and other information Sam will need. There's a reason he's on screen so much.
Cersei's torture was indeed worse than any I could think of, proving Olenna right. At least she got in her jab, which also let Jamie realize that his brother was innocent (as was Sansa). That wrinkle may yet play a role. Glad Jamie let her die with dignity.
Sansa gained 40 IQ points almost overnight. The interactions with Bran, who could explain a bit better, and Littlefinger, were both odd. Littlefinger's comment about preparing for every possible outcome was interesting in theory, but impossible in practice. The general point was valid though. Bran needs to start providing some useful intel, or he's no damned use at all.