That's some pretty great stuff. No doubt a lot of hard work and thought went into that.

The first thing that popped into my mind is why some sort of adjustment isn't made for percentage of total passing yards vs. rushing yards. My thinking here is to properly reward a QB who orchestrates an 80 yard drive consisting of mostly passing yards but ends with a RB punching it in from 2 or 3 yards out. This would also properly devalue a "game manager" QB on a predominantly running team, while properly raising the value of a QB who successfully runs a passing attack offense. I certainly don't mean to be critical here, I'm just wondering if something along these lines was considered (I'm guessing it was) and if so why it was decided against.