not only is he annoying but he's not even necessary anymore. He pretty much never helps the boys out or saves the day with his Angel powers anymore.
The boys don't need anyone else starring on the show. If the show runners insist on having a third person starring then the only only person that I would ever want as a star of the show besides Jared and Jensen would be Jim. But nope they had to kill his character off while they keep torturing us with Castiel