On another note, this was bugging me as I woke up this morning. So Uncle Benjin was stabbed by White Walkers, but then the children of the forest turned him "back", sort of, by stabbing him with dragonglass. Now he has some kind of connection to the children, and to the Three-Eyed Raven. Knows where to find Bran/3ER and Meera just in time to save them from some wights, but for some reason didn't go find them when they were at the tree place where all the wights and white walkers were heading. If he had got there like a few hours earlier he would have gotten all of them out sooner and maybe saved Hodor (or maybe not Hodor, who I guess was doomed by the whole time travel thing). At least he could have saved the Children.
Also, this bit of dialogue was pointed out on reddit...
Jaqen: And?
Waif: As I expected.
Jaqen: Shame... A girl had many gifts.
Point being - the waif referred to herself in the first person, and was Jaqen referring to Arya or the Waif?