Each ep seems like a filler to me. Previous seasons each ep expanded upon on another and revealed a bit more about the storyline. The last few eps nothing has been revealed which is disappointing. Also it would be nice to have more River! In previous seasons with Rory and Amy there seemed to be more focus to the story. There hasnt been much to challenge to Doctors morals as well. Last season had a great ep set in the wild west with the Doctor facing his morals.