I can let the whole reapers are angels thing go, what bothers me is the whole it's Dean, Sam, Castiel trinity thing.
Now don't overreact I like all 3 characters, Cas is my favorite, it's just that we've seen this setup in every season finale.
Just once I would like a massive open battle between angels and demons, or an angel civil war. They always tease it, and it never ends up happening.
And I'm getting a bit tired of the same plot always reused, I guess it's because we're in season 9, don't get me wrong this season is much better then the leviathan one
,but still this show is in need of fresh ideas if it wants to go on for another 4 seasons.