Tyrion will meet Jamie. Hell he may be the one to spare them or pull them from the water. I doubt Dany is involved in it as she would take him prisoner. She doesn't have compassion of others which is a bit odd considering her goals. She is sort of a whiney bitch to be honest and the only reason outside destiny and dragons she made it this far is somewhere along the way she realized it as well and started taking and following the advice of others.
I'm going to say Jamie is pretty much done with the world he knew at this point. He probably nearly drowns and was full on PTSD after that fight. He's had losses before but never in his face and never with people roasting alive. The scene where the men beside him turned to ash then the others had melting skin did him in. Once Tyrion brings up fucking undead and lich kings he will just freak the fuck out. They are also friends and brothers and Bronn considers both to be probably his best friends. Pretty sure Bronn is now also at the point where fuck all this, there be dragons and well fuck the gold and my castle.
The arguments between Bri and Arya hold weight. She should not have been able to parry those blows, especially given how hard she was swinging. I noticed this in season 1 as well at Castle Black. Those edges might be dull but fuck me one of those catch you in the neck or head and you'll make current Bran look like a social man. Catch one in a joint/hand/unarmored and someone will be opening up your ketchup bottles for life. This is why Romans used wooden swords! Still it is a magical world and things don't act as ours. Otherwise there would be 10 year summers and dragons and shit running around. I am still more bent on the fact everyone is already starving/needing food, winter is just now coming and she roasted probably 10% of the continents grain/food stores. Even though it was only 27 wagons of it.
My biggest gripes are still not with the characters, or the show but rather HBO's decision to cut out 7 episodes from this series when many things could have been explained better or story arcs filled more. We saw Sam go to Old Castle, which oddly enough Jorah happens to show up infected and he cures him. Now I suppose we'll not see them again or they will magically teleport all the way across an entire continent longways to some mission or statement. What a fucking waste. If HBO had any sense they would have cut the opiate supply to the writers 40%, just enough to make them write out 5 more hours of events and dialogue and gave this series the proper burial it deserves.