Quoth the raven,

Jon Snow will be brought back to some twisted form of life by the white walkers. Twisted in mind because of his single minded thoughts of Arya. I don't think any of the house of the north will support Jon. His support will mainly come from the wights and the white walkers because he will become one of them. That will grant him an army of the undead which will be hard to stop.

It seems that is indeed the structure of the series of novels. Bran is the prince of darkness who will bring misery and suffering to the people while Dany brings back the light and the hope.

GRRM will repeat the cycle and Euron will dominate the south in westeros. His rule will end when Daenerys and her dragons come to Westeros. Euron will kill many people before that happens though. I am thinking poor Aegon and Arianne will be among the casualties of the Iron born invasion.

The symbolism goes deeper. If we take the direwolves for example. They are pack animals and we see that nature in the Starks. It is the Starks' pack nature which will bring the darkest tragedies to Westeros. Arya and Jon will no longer have the ability to discern right from wrong. They will start a campaign of revenge and seek to murder entire families as they lose the ability to separate the guilty from the innocent.

The wildings will run her out of the North if she tried to sell them that story. Jon is not AA. He's the Night's King reborn.

Jon didn't set out to weaken the watch but that was what he was doing. Jon had to choose between the watch and Arya. He chose Arya even when he knew it would weaken the watch and risk the safety of everybody in Westeros. He was just somebody who should have never been chosen to lead. There was no time to formally charge Jon with treason because he was ready to lead the wildlings out.

The Starks are too prideful for that. Walder should have milked the advantage for all it was worth and required more from Robb.

Walder has no history of trouble-making. It is the Starks who have that unpleasant reputation. Remember what Brandon Stark did before the rebellion. He made threats to harm the ruling family. It is also beginning to look like, per Barbrey Dustin's words, that the Starks were part of a devious secret plan to remove the Targaryens from power. Cat's reaction to what happened to her son is what started the war of the five kings. I know it is mostly Jaime's fault but Cat should have known better than kidnapping Tyrion.

The Unsullied will be fighting a Westeros army made up of laborers and farmers who occasionally play at soldiering. Don't expect much fight from Westeros. It will be much easier to just start another field of fire and barbecue the Stark forces and their wildling friends rather than going through the trouble of meeting them in open battle.

The head of the Frey family might surprise us and outlive the Starks.

Protecting the wall was not what Jon was doing in his last chapters of life. He was undermining the wall. He wasn't doing this on purpose but he chose to risk them all for the sake of finding his sister. He wasn't plotting against the wall. Jon is not smart enough for that. What he was doing to get Arya was causing problems for the Watch.

Skahaz is indeed loyal. His loyalty opens the way for Daenerys to leave Meereen in capable hands so she can claim her father's kingdom that is now hers.

Harrenhal was also a huge chunk of stone and mortar. It burned and melted like wax. Three dragons would make short work of Casterly Rock. I would love to see the dragons bake the Lannister scum, however, Jaime already had a vision of ice wights attacking the castle. Lord One-Hand will freeze in his castle as the poor outside his walls.

Tywin is as responsible for what happened to Elia and the children as Jon Snow is for the crimes committed by Mance and the wildling women. Both commanders unleashed savage criminals.

The Targaryens were tolerant of the Starks. The North is poor and revenues from taxes were most likely paltry. Aegon removed Black Harren and saved Westeros from Ironborn domination. The Starks should be thankful.