Well, this season ending was weak. Man, I hated this season. So many filler episodes. So many plot-holes. Less demon action. Crowley is so fucking disorganized. Lillith, Azazel, Alastair etc etc literally had agendas with apocalyptic consequences. With all these game changing characters dead and the gates of hell still open, it seems to me that Sam & Dean are losing their touch.
Crowley's one track mind is easily derailed. His thinking is not even far reaching. I would bet Azazel had never found himself in a devil's trap (or handcuffs).
The whole thing with Metatron is also weak. Don't angels operate on grace? Why didn't the Lord's scribe just find grace's equivalent of steroids and dose up on it heavily? I mean, c'mon! Anyway, the show has lost it edge. They need to do something. Something big! And not something like the leviathans which was just grasping for episodes. I would prefer they end the TV show rather than truck along aimlessly with fewer creatures.