I am tired of the group facing threats from living people. It gets old and too played out. I guess the writers are having a hard time coming up with new material. First it was the governor and his bunch, then the governor again with his new bunch, and now this. And that ain't counting the people Darryl was with and the ones that Rick and a few others encountered while living at the prison.
The walkers are a minimal threat. They're so pathetic, they walk into open pits. As the characters go on, the threat has to increase, or there is no tension. Not to mention experience points. Can't level without xp.