Tanks and guitars in the 12th century just looked and felt wrong I think it was just supposed to be absurd - it was an entrance, mostly irrelevant. The significant bit (possibly) was when Missy said something about the doctor kidnapping the presidents wife and being a she - one of which was lie (not verbatim obv), maybe building up to the next re-incarnation...
I thought it was good - nothing particularly original, but nicely done all the same.
Biting the hand that feeds IT
