We lost a Reed in the finale! You couldn't have possibly thought: "Well, not enough characters died this season," so can you address that move?
Jojen is a bit like John the Baptist. He's there to make sure a person of cosmic importance ends up where he belongs. Once Bran gets to the Three-Eyed Raven, he has served his greater purpose. It felt right to have him sacrifice himself to get Bran to his destination. Also, there are lot of wights in that frozen field. It seemed pretty unlikely they wouldn't score at least once.
The also discuss the Brienne/Hound fight, and losing Tywin. Check out the full interview here.