Seems like everyone is focused on game time decisions with regards to analytics, but this is almost certainly its least useful function at least for now. Obviously the more complex the system (22 guys on the field) the less useful measurable numbers will be, but there are lots of things that are much much simpler. If you look at things like cap management or position depth your dealing with areas that have always required some semblance of analytics, and don't have too many variables or nuances to consider. I think the next big step for analytics in the NFL will come from its use in college scouting.