I didn't know about the mystery box, but I have always thought of Abrams as being good at starting things and not so much at concluding them and that helps to explain why. I thought Alias and Lost both started very strongly, but faded badly.
I finally got to see this last night. I got to the cinema later than usual, due to a parking issue, which meant I ended up sitting much closer to the screen than usual. This certainly didn't help with the quick cuts and shaky camera work for some of the action scenes. It wasn't an issue I was...