I ALSO REFUSE TO BELIEVE THAT CAS'S GRACE IS PERMANENT. That just doesn't make any sense, story-telling-wise. They de-powered him on purpose so he wouldn't be the convenient tool in the Winchesters' back pocket. They wouldn't power him up again so easily. Although I thought I spotted a trenchcoat in the preview.
Samzekiel didn't play out the way I thought it would - it was BETTER. Gadriel, really? This is gonna be awesome.