As monstrous as he is, Joffrey does make a interesting point in season 1, episode 3. By allowing all the houses to control their own individual armies who can defect, it's much harder to keep armies together. In the middle ages, people didn't really think in terms of nation and didn't really fight for their country. They did so for their own personal homes, families, feudal lord, or for religious reasons. The Long Night saw the Glovers once again defect, and in times like this, we need the whole nation working together even if we don't like each other.

That was one of the reasons why in real life, feudalism faded out and feudal lords became or were replaced with governors, or counts. So, think the same is going to happen in Westeros? Westeros may have earned a respite, but war, corruption, and new crisis's will eventually return. When that day comes, the Kingdom of the North and the 6 Kingdoms need to be much more united and ready. Think feudalism is on it's way out? Only your imagination decides that.

I'm not throwing fits that this did not happen, but something I hoped would happen in the final season would be Bran and Jon thinking back to the scene in Episode 1 where Ned, beheads Will, for Night's Watch desertion. Before he lost his head, he tried to warn everyone about the return of the White Walkers. I hoped that Will would have gotten a posthumous recognition that had people listened to him, maybe more people would still be alive. Not a pardon as he's still a deserter, but at least people could have admitted that they should have heeded his warning.

What is your favorite moment in the series, books or otherwise.

This can be things like the Red Wedding, Spin offs like the destruction of Summerhall, etc.

Baelor the Blessed/Bamboozled, had plans to outlaw worship of the Old Gods and the Drowned God. But he died before he could. Ironically, his death was seen as a blessing, as it most certainly would have lead to rebellion. If Baelor was not stupid enough to have that fatal fast, and he had tried it, and the Starks and Greyjoy’s rebelled, how do you think it would have ended?