Well Brienne had to be out of Winterfell so that Littelfinger wouldn't get suspicious when she doesn't step in between the sisters as they "fight" each other. Also, Sansa probably deemed her too honorable to bring her in on the scheme.
Yeah, I understand why they were sent down there, but they didn't really serve much of a purpose during the proceedings. Their presence seemed more forced so the show could have all of these little reunions. Don't get me wrong, I loved the reunions, especially Brienne's confrontation with Jaime, but from a story perspective, it didn't make much sense for them to be there.
And will we see Daario among the foreign mercenaries or is he content where we last saw him?
Well, he's the leader of the Second Sons which is a different group from the Golden Company. The history of those two organizations haven't been discussed in the show, but their histories, particularly the Golden Company's, have particular meaning. It would be weird to have Daario suddenly be part of the Golden Company, especially fighting against Daenerys.
"Oh and by the way, I had Hodor break the neck of the man that chopped it off...sooo....you're welcome...?"
Now
that's what I want to hear Bran say to Jaime. It's a great mixture of exactly not what Jaime expected to hear from Bran considering what Jaime did to him and shows off Bran's continuous creepiness.
Though I really wanted to see Bronn reaction to the white walker, guessing the rumor about Jerome and Lena are true.
Whichever is the one who is refusing to be on set at the same time as the other one needs to start acting more professional, has the the story ends I have a feeling there will be less distance between the characters and it will make it more difficult for them not to be in at least one scene together.
That's the first time I've heard that rumor but I don't follow celebrity gossip either. Nonetheless, there wasn't any reason for Bronn to be there anyways and it makes sense that he would leave with Podrick.
Okay, so the number 3 keeps popping up in the GoT mythos.
True, but that's also a common literary device.
The 3 Sand Snakes. Obara, Nymeria and Tyene.
Actually, there are 8 Sand Snakes, four adult, four children. Oberyn even alludes to there being more in the show during a conversation with, I believe, Tyrion.