I actually like the stories about Craig, the Eleventh Doctors former roommate. I think the character works well as an entertaining, low-level sidekick. It was good to see him return here, and I think that he was well-used, though I could have really, really done without fans who think the Doctor is able to actually communicate with babies. Now I will admit that the Cybermen arent required for this story. Really, one could replace them with just about any of the Doctors adversaries and have basically the same story. But thats ok, because overall the story works, and thats what we need.