I was kind of disappointed that we didn't get to see the Ark Angel, but maybe in another episode.
Also, I've been disappointed at the show for a while, and haven't felt like writing about it. The story with the angels and the demons... it just got too much for me!
But I like Cas. "You should've seen Luke"
A few thoughts...
Sam's powers didn't work on Lilith, why was she afraid of the knife?
If they wanted Lilith dead, why did Dean warn her about the Ark Angel coming? That was just stupid.
What do you think of Zach, the angel that visited the prophet in the end?