Some interesting thoughts and predictions and a few things I'd like to respond to:
1. Dany being generally awful/villainous: I think the characterization that she's selfish and a poor decision maker is unfair. From the start, she was thrust into being 'queen' (traded as a sex slave for an army) and with few exceptions, is where she is and how she is because of bad advice. She didn't kill Khal Drogo - he was wounded in battle and near death after attacking Khal Ogo (and was probably going to die) when Dany bartered his horse in exchange for magic to cure him. Remember, at this time she's a teenager who's lived in exile most of her life. Unfortunately, we know what happened to Khal as a result of the 'magic' - it was a curse, he died, and their unborn child died too. Dany was ready to give it all up and kill herself (by laying on Khal's burning body) when it was revealed that fire couldn't hurt her. Since then, her piddling around Mereen was mostly at the advice of Jorah, and re-opening the gladiator pits was at the advice of either Tyrion or Varys (two really smart people who have made astronomically dumb decisions with Dany). Tyrion also suggested she negotiate with the slavers (who then attacked them), and whoever told her to split her army to attack King's Landing, Casterly Rock, and the Iron Fleet were idiots. Dany takes good advice when she gets it (see last night's episode with Jorah). And holding Jon Snow hostage makes sense - she has no reason to trust him (and has grown up believing nearly anyone from any respectable House would rather see her dead - especially the bastard son of Ned Stark, who helped overthrow her father, and who also approved a hit on her life when he learned where she was) but in the end, she does.
I do think they're trying to transition her to take a prideful fall, but I can't argue with why she is the way she is. She didn't have to do sh*t up North if she didn't want to; she's the only reason the North has any kind of chance at all. For this reason, I think either she, or Jon (but not both) will likely die before the end - their co-existence seems destined for doom.
2. Tyrion: Will be interesting to see what, if anything, he learned from his quick chat with Bran. Tyrion has been responsible for nearly every awful decision Dany has made, but he's bound to do something smart soon. Like, next episode soon.
3. Girl with facial scar/burn: Definitely think she may be part of Cersei's plan for Dany after someone here said that; especially with what looks to be a burn potentially caused by being around the wildfire in the Sept.
4. I'm also in the camp who thinks the army of the dead will fall next episode and that the real battle will be among the living for the Iron Throne. We'd get the North vs. Dany vs. Cersei and I think that's what everyone wants to see.