True enough. The difference is definitely in the little things - the lighting, the angles, but also the dialog and the little moments from the minor characters. And what it really comes down to, I think, is the Doctor's reactions to them. He may have yelled and grumbled and argued with the Brig all the time, but he liked UNIT of old, and understood that they were just Humans who were trying to do good. Now he's not giving them that credit, and it makes me feel sad for them.