Nice list! It got me thinking.
On #2, yes. As I said above, needs more expo!
#3---Grey Worm and Jon should have had a death duel after Dany died. But Direwolf snuggles was heartwarming later!
#4--I only know this because of too much topic surfing, but Ayra asked the same question of her tutor in season one. She wasn't particularly bloodthirsty until her Dad was killed. I think she's always wanted adventure, she just also wanted revenge for a while. It was limited to her list. I had no problem with the Hound getting her to turn around from killing Cersei, either. He just made her see she was getting her revenge regardless, and there was no need to be as stupidly obsessive as him.
#5--I don't see why the non-Stark characters would be swayed by Tyrion's speech about Bran---another more expo needed bit
#6--is it any more cheesy than "There and back again?" (Tolkien) I thought this fit in-universe mythology fine, but I seem to be in the minority
#7--I know the show shoved "Targaryens, flip a coin" down our throat, but I don't think she was any madder than Hamlet in the Shakespeare play. A tragic character brought down by flaws in her character, e.g. a fiery temper, a sense of divine entitlement, being gifted with supernatural assets that allowed her far too many no-compromise wins which led to hideous inflexibility , etc. I think Tyrion's speech in the last ep summed it up perfectly. That speech seemed aimed at the audience more than anyone. She was probably never well suited for being a healing monarch. But she was a pretty underdog. Audiences love pretty underdogs.
#8--Lanisters pay their debts? Tyrion does seem to keep his word, no matter what, and he did tell Bronn to make the deal he ends up making if "anyone sends you to kill me."
#9 Varys and what's-his-beard-from-Essos's plotting from season one (and book one) is a bit hard to figure, given how Varys's motives developed. I think Martin is to blame here. Admittedly, it's hard to come up with a convoluted plan than makes complete sense unless you are actually a master schemer in real life.