Universal Sword Donor

Yes

What did Rickard do to earn execution?

Gotta be Daeron II. Man became king of Westeros. Daemon only failed at it and Bloodraven was merely HotK.

Gotta agree here. Donal Noye even told him how to befriend the other boys. That's not even getting into the decisions others forced on him ( Qhorin ) or the ones who shielded him from negative consequences (Old Bear, Aemon).

What good does that do them? Possibly kill a bunch of people and then murdered by the GC or sworn swords? They'd have to have dozens of conspirators and hold hostages inside of Maegor's Keep to have any chance of success. In the words Doran, someone always tells. Frankly unless the KG gets reorganized into a large, royal unit like the Scots Guards of France, Varangians, or Praetorians

Mongols had use for cities and trade routes and subjugated peoples. The Dothraki do not. They are nomadic and their one city is inhabited primarily by slaves. They take slaves and loot, destroy what they want, and ride off to sell their newfound wares. You do that often enough to an area and suddenly the lack of population tends to make more sense. I doubt the Dothraki individually killed every single member of those races, directly or indirectly, but the conflict between those races and the Dothraki probably sent a lot of people to safer places just as much as they did into the grave.\ We know this has already happened to a certain extent in the North from wildling incursions. Mass scale migration also happened in the real world in ancient times. Just look at the Goths and the Vandals.

Man I know Royce was kind of an asshole but re-read that chapter. He's pretty much spot on with every points he makes, but he's just condescending af when he does it. And even though Mormont complains that Royce was green: “ The Royce boy was green as summer grass, yet he insisted on the honor of his own command, saying it was his due as a knight. I did not wish to offend his lord father, so I yielded. I sent him out with two men I deemed as good as any in the Watch. More fool I.” He spends the next five sentences bitching about the quality of recruits and ironically undermining his own statement about Royce. “In two years I will be seventy. Too old and too weary for the burden I bear, yet if I set it down, who will pick it up? Alliser Thorne? Bowen Marsh? I would have to be as blind as Maester Aemon not to see what they are. The Night’s Watch has become an army of sullen boys and tired old men. Apart from the men at my table tonight, I have perhaps twenty who can read, and even fewer who can think, or plan, or lead.” Making the assumption Royce can read, he also shows himself to be one who can think, plan, and lead all in the chapter. On the job training is basically the only thing left for Royce to do, as it doesn't seem that CB teaches "Ranging 101." All the applicable skills that need to be learned to become a ranger (riding, fighting, scouting, hunting et al) Royce has already learned and been performing at a passable level for years. This deployment is basically a career sergeant bitching about a newly minted lieutenant he has to report too. Now we as readers get to use hindsight to make 20/20 judgments on him but the odds of running into 8000 year old monsters instead of the band of wildlings (or something similar) is pretty slim. Had he gone back without any proof of their whereabouts or deaths, he and the scouts would have been reprimanded by Mormont and / or sent back out to find them again. Mormont picked a promising candidate for a seemingly mundane mission as a way of grooming him for command. Kinda like Renly's death by shadow baby, no one predicted a near impossibility happening and that's why the ranging was a failure.

TBF the starks really seem to have an affinity for executions. All i got

Possible. It's also possible that Mandon Moore would use someone else's sword. A third possibility would be Moore uses his dagger. Another possibility is that Moore would pick up Pod and spin him around until his spear slice Tyrion.

Widow's Wail and Oathkeeper were seemingly longswords. Ice is long and super wide for a sword (e.g. prolly looking like a final fantasy RPG sword), so it having enough metal for two longswords doesn't seem out of place. I don't really see any inherent contradictions in the descriptions and subsequent events other than being able to draw any type of long blade from a back scabbard is impossible unless you're 8' tall with arms as long as a gorilla's.

Gerion didn't have to marry a whore. He has a natural daughter, Joy Hill, by a commoner named Briony. I don't know why Tywin would disown his brother for it though.

Yep Tyrion thought otherwise “More than you know, Father,” Tyrion answered quietly. He finished his wine and set the cup aside, thoughtful. A part of him was more pleased than he cared to admit. Another part was remembering the battle upriver, and wondering if he was being sent to hold the left again. “Why me?” he asked, cocking his head to one side. “Why not my uncle? Why not Ser Addam or Ser Flement or Lord Serrett? Why not a … bigger man?” Lord Tywin rose abruptly. “You are my son.” That was when he knew. You have given him up for lost, he thought. You bloody bastard, you think Jaime’s good as dead, so I’m all you have left. Tyrion wanted to slap him, to spit in his face, to draw his dagger and cut the heart out of him and see if it was made of old hard gold, the way the smallfolks said. Yet he sat there, silent and still.”

Look at what i quoted of yours.

GRRM, via Tywin: “It was to be an arrow, at Edmure Tully’s wedding feast. The boy was too wary in the field. He kept his men in good order, and surrounded himself with outriders and bodyguards.” “So Lord Walder slew him under his own roof, at his own table?” Tyrion made a fist. “What of Lady Catelyn?” I have yet to see anything fan driven regarding the latter, except for a post or two about Robb surviving a mass slaughter where everyone dies but him

I don't see a scenario playing out where Robb survives if the RW actually happens. Killing him was the entire point. Edit: except my extremely likely, if not probably, scenario I laid out before, obviously