In terms of flow inside the stadium, I didn't notice much of a difference. I came in the north end. I didn't notice any change in the concession lines or bathroom lines, but I didn't use them, either. The towers make the stadium look better, in my opinion, because the brick facades match a lot of the brick on the outside of the stadium. In terms of how it looks on the inside, I'm neutral.
Coming into the game I really didn't think that the boxes would cause any change in noise levels, but I actually think that they did. You could hear an echo whenever the announcer said anything, something I had never noticed in the past. The student section (and other parts of the stadium as well) were definitely louder than usual.