And honestly, after her encounter with Bran (who is very changed) it is probably jarring. She isn't naive anymore (or as naive) but it probably is still a surprise that both of her siblings have changed so much and been through so much.
I would love to see her show up later with her father. I don't think there is enough plot time to make this happen but that would be pretty awesome.
And really, the Plantagenet family was Norman and Angevin so in a way it was the French v. the French anyway.
I always figure that Jon Snow would be the one to come back more dead inside because of his resurrection (just from what happened to Cat and the different things that Beric Dondarrion said about losing pieces of himself). Maybe it is just very, very distracting being plugged in the weirwood network. Is he plugged in all the time?
I think everyone already answered this by the time I typed - Varys and later to Tywin.
One thing that made me laugh a little was that Cersei couldn't get through even a pleasant meeting with the bank of Braavos without needing to drink some wine. How is that liver doing, Cersei? Also, Jaime was disgruntled about, what exactly, during his first scene when Bronn is trying to talk to him. Killing Olenna? Olenna killing Joffrey? Cercei being a cold-blooded murderer? If Jaime somehow ends up Dany's prison it would make absolutely no sense for her to do anything but roast him. He killed her father and even though she might not think her father was anything but the mad king, there is no reason why she wouldn't execute Jaime on the spot.
ETA: I really think it defies belief that the Dothraki horses don't get spooked by giant Drogon flying over them in the initial charge. I guess you could make some argument that they are used to the dragons by now but, well, you can't really get used to the dragons.