I didn't really like it tbh. Well, the Snowmen story part of it & the invisible staircase. Everything else was good; the memory worm, Strax and one word: Pond. At first I thought the winter is coming thing was subtle, then they mentioned it about 5 times
JLC is lovely and it's good to know they're coming up with new interesting back stories for characters (Amy + Clara have one hell of a better story than Rose, Donna & Martha). What's with phenomenal actors just having voice roles? First Michael Sheen now Ian McKellen.
I completely forgot that the Doctor never saw her human form in AotD so wondered why he didn't recognise her