I agree the Ygritte scene was unnecessary - they could have had her shoot him in the previous episode and free up more time for other scenes. Tyrion/Sansa wasn't that bad - in the books they aren't besties, but they don't hate each other. I guess the Shae scene is about driving a wedge between her and Trion. Not needed, and I felt it was dumbing the plot down a bit. Takes away a little bit of shock at finding Shae in Tywin's bed. Season 4 will be good though. It will be very wall orientated.