Honestly, I would do away with the heavy presence of demons. They are the cause of EVERYTHING anymore!! Even when there is some other crazy creature causing trouble - the demons sent it!! It's just getting a little old. Though, if they do it right, bringing Meg back might help. I pag-ibig her!
well nothing major :D but remember in the episode the monster at the end of the book...cas mentioned that chuck's books would became known as the winchester gospel....i would change that....maybe a different name or not have it sinabi at all....it just seems a little silly 2 me :) and a tad over kill