Final Season 8 spoiler

I do not rely on his conception of evil, I have a moral duty to restore a meaningful sense to words 
I suppose this will be part of Good Queen Cersei's legacy after this bloody mess cleans up. I'll have to make sure it finds its due place in the histories.

GOT Academy have come up with the prediction that Arya will kill Daenerys and Drogon instead. I want to agree, simply because it would fit in with the position of the Faceless Men and make the whole thing make sense. But I think Arya will not be a direct dragon slayer. The stupid beast will writhe in agony for days, failing at digesting her 

I don't primarily care what an author means. Art belongs to the beholder and what we make out of it is what matters. The same goes for history. We draw lessons from it, we do not ask what its actors were trying to tell us. What remains, though, is that he clearly identifies the Night King and Daenerys as threats to the realm, which has been obvious from day one. When Viserys tells about going home with an army, he leaves no doubt about it, nor does Daenerys when she looks enraptured at Drogo promising death, rape, destruction and pillage.

And yes, Arya has become the equal of those she hates. Another trick of the great twister, no doubt, but well in line with his tactic of making the supposedly good guys do the worse things and those he made his audience dislike pick up the pieces and clean up the mess. This is how Sansa will be the good Stark, not her angry serial killing sister nor her dumb as fuck cousin Jon. I'm not sure the author means anything particular with this, I think he's just playing at providing the unexpected without a particular message. The lesson, though, the one we can take, is that the largest part of the audience has been utterly blind to it for years, clinging to immature first impressions and passing judgement only on the superficial. They behave the exact same way on the political field, not just within the harmless scope of entertainment.

Sansa will be the one standing in the end and she has been stylised as Cersei's daughter. 

Ok, let's call it a bend, then, a carefully planned slow alteration that goes against the expectations the audience was made to have.
He does it all the time, all over the place. He said himself Tyrion was turning into a villain. Cute Arya has become some sort of psychopath. Daenerys still fights with herself in Meereen in the books but the show made her ruthless afterwards. Subversion is the man's gimmick. Almost everything turns out to be something else than announced.

I fully expect the Wall to be the root of the whole problem with the Night King. "Tear down this wall, Mr. Martin" will likely be the moral of the story.

There was no such clue in S2. Arya was using the tool she had to get herself out of trouble and it was even suggested she appreciated Tywin's company. She never thought of Jaqen until the Braavosi sailor refused to take her to the Wall and even then, it was the only "ticket" she had to go anywhere. The point at which Arya turned to me was when she said her god was death in S3.

And yet, she never made the link with her praying list. He had to do that for her in the season finale but she said she had to go back to her family instead. So whatever we might think his influence was, Arya still appeared whole to the end of S2, transforming her last kill in a request for help to escape, and Jaqen was just one more of the shady characters on her way. 

I think the show delayed Arya's evolution and made it somewhat of a riddle. She breaks early on, in the first day at Harrenhal, and we see her reciting her list in her first night in the pen but then she's back to normal in her interactions with Tywin. When she turns back in S3, raging against the Hound after finding relative safety, it seemingly comes out of nowhere. I seem to recall a darker book-Arya with "weasel soup" and killing a northern guard on her way out.

Ned Stark was the prototype of an irresponsible idiot. Worst possible "hero" I have come across, I'm afraid. I have only disgust for him.

I take time to form an opinion on characters so I took no side for a while but by the duel with Jaime in ep. 5 I was neutral, and by the time Ned was declaring war on Tywin I was done with him. I think the conversation between Cersei and Robert was the decisive event as a whole.

The deserter wasn't really one. A deserter is someone who drops his uniform and runs away from war, not someone who disobeys to warn others. Ned was introduced as a stiff follower of principles who repeats sayings he got from others for lack of brains to form his own judgement. Cersei will tell him just that: "your brother was trained to lead, you were trained to follow".

Everything in Ned Stark speaks of disdain for life, be it his or that of others, with the exception of his daughters. He'll choose war for a principle and say he's "learned to die long ago". 

He was that typical feeling fool who thinks children are worth more than anything. Stupidity incarnate.
As to Tywin, Ned was escalating the situation. He was just the kind of person you do not want in charge. Fan favourite of the dumb part of the audience.

Robert told him what to do at the beginning of S1E06 and Dumbfuck Stark did just the opposite. Traitor to the realm.