Though he'll tell anyone who will listen that he's the Three-Eyed Raven and has semi-omnipotence, Bran rarely ever uses his omega-level mutant powers to help the people around him. Even more baffling are the apparent limitations on Bran's all-seeing/all-knowing abilities. Sure, he SAYS "I remember everything," but he sure as hell doesn't act like it.
Case in point: Here's actual dialogue from the awkward scene between Bran and Sam in this episode:
Dude, you're the psychic. If you can't guess why a member of the Night's Watch is in the North, you're not even at the level of Miss Cleo, let alone Professor X. You can't say that you "remember everything" and then space out basic info. This would be a bit more forgivable if Bran seemed to be struggling with his newfound power, but when we met him this season he was already in full-on goth robot mode. From the way he was acting, there shouldn't have been any reason that Sam (or let's be honest, Gilly) would be able to present Bran with new information about Rhaegar Targaryen and Lyanna Stark, but that's what happened.
It seems like Bran only has ultimate knowledge of everything as long as the plot allows him to have ultimate knowledge of everything. This will likely present a problem next season, since Cersei's betrayal will be a lot less dramatic if Winterfell's human Wikipedia spoils the whole thing. As it stands, the Stark family's resident telepath is not doing much other than killing everyone's buzz.
The big reveal with Littlefinger was incredibly satisfying, but that cathartic payoff came at the end of a Winterfell storyline that never made any sense. We were all waiting for Sansa to use Littlefinger's teachings against him, but that deception seemed to mostly happen offscreen. For the last few seasons, Sansa and Arya were at each other's throats. It was so bizarre and out of character that it seemed as though there had to be something else going on -- but there kind of wasn't? We're left to assume there was a scene we didn't see in which Sansa reconciles with Arya and they hatch a plan together, dealing Bran into the mix at some point (more on that drip later).
But that would mean that everything leading up to that moment was real, including the bit in the last episode where Arya talked about becoming her sister.
Let's be clear: Arya held a dagger in her hand and threatened to cut her sister's face off and wear it around town. Littlefinger was not skulking around in the background, watching a fake scene put on by the Stark sisters. This was not for show. But it wasn't building to anything. The tension between Arya and Sansa is completely nullified by the end of the episode. The only reason for that confrontation to exist was to set up false expectations for the audience, to make the delicious twist of Sansa saying "...Lord Baelish" all the sweeter.
But in holding back that information for the big shocker, we lost a scene of two sisters realizing that they value and trust each other more than anything. The juicy payoff of a plot inevitability came at the cost of vital character moments. At least we got to see Littlefinger cry.
Unlike the naive dolts who risked everything to present a single ice zombie to a queen that wants them dead in the heart of her evil empire, Cersei Lannister isn't stupid. She lied when she said she'd agree to help Jon and Dany in their war against the White Walkers, and she was absolutely right to do so. When Cersei told Jaime that Lannister soldiers probably wouldn't make much difference in the war with the Night King, she had a pretty good point. And then her plan gets a little weird.
Cersei explains that, with the help of the Iron Bank, she's hiring The Golden Company. They're a large band of mercenaries that operate in Essos. In other words, Cersei is bringing in a foreign army to help her -- which is exactly what she blasted Daenerys for earlier this season. She and Jaime were using the fear of the unknown to win allies like Randyll Tarly.
To say all this and then turn around and bring in your own group of foreign sellswords doesn't seem like it would do you any favors when it comes to winning over the last few lords that aren't scared shitless after seeing the ashes that used to be a Lannister army. Then again, this is the same queen that plans to go public with her new incest baby, so her schemes aren't exactly perfect.
Littlefinger's mock trial came to a head when Bran backed up Sansa's claims of treason. But even though Lord Baelish could have hidden his shock a bit better as the Three Eyed Raven gave an exact play-by-play of past events, this shouldn't have been enough for a conviction in the court of public opinion. The main piece of evidence here is Bran's word, which to most everyone else, shouldn't mean dick. The Stark siblings weren't convinced of their brother's abilities until he brought up terrible secrets that no one else would know -- so why would the rest of Winterfell go along with this?
The Northern lords are breathing human beings and as such probably hate Littlefinger, but they should also be skeptical of a boy that hasn't been seen for years showing up and throwing around accusations based on "visions." Hell, Sam Tarly has seen some of the wildest shit Westeros has to offer and even he's weirded out by Bran's declarations.
Even if the whole gang was collectively convinced of Bran's power, that would only bring up more problems. Some of the lords might wonder why in the blue fuck Bran didn't bring up Littlefinger's treason weeks earlier, for instance.
It might be too late to think about that now. That particular plotline has been cut at the root. Speaking of...
Look, do I want more useless Dorne scenes taking up valuable runtime in the handful of episodes we have left? No. But I can't help but wonder what the hell is happening down South. Seriously, with Ellaria Sand in captivity and all the Sand Snakes done for, who is running Dorne? Euron torched their ships, but they should still have a functioning army, right? What are all those soldiers up to? This whole kingdom is a giant question mark, and we really should get some closure or continuation there. It couldn't get any worse, could it?
Jon Snow's plan to bring a wight back to King's Landing was more than silly at first blush, but in hindsight it's the worst trade imaginable. For their trouble, Jon and Dany gained a fake ally that will stab them in the back, and in return the White Walkers gained a giant dead dragon that spews blue fire hot(?) enough to destroy the Wall.
About that... was this the Night King's plan the whole time? Just kinda wait around until someone was stupid enough to bring a dragon far North and bring it over to the dead side? Because that seems like a somewhat flawed plan for a mega-powerful ice devil with thousands of years of prep time. Was there any kind of backup strategy in case Daenerys didn't have a change of heart and fly beyond the Wall? If all of Westeros just ignored the White Walkers, would they have any other way of invading? It seems awfully risky to base your entire offensive on your opponent making a brainless mistake. Or it would seem risky, if this wasn't Game of Thrones.