anything they can do to limit the frequency of coach challenges and replay reviews is a good thing in my book. i'm blown away that we still use three or four oft-poor camera angles to try and determine whether or not a ball crossed a straight line.

other than that, i still think football should be played on a grass (preferably muddy) field with the outcome determined by grit, determination, chance, and physical ability - not robots picking from a statistically optimal playbook. That being said, it will be pretty funny to see the geeks take over the NFL.