Beg pardon, but that's insane.
How can Key, for instance, rank a DB accurately? He never sees them except in scrimmages where his focus had better be on the OLs. Same for the other coaches. The "composite staff ranking" would make no sense to even calculate. I bet Coach wasn't being clear about what they are actually doing.
Oth, I'd like to see what kinds of analytics they are using. Baseball has very sophisticated ways to measure player contributions, but they have much more game time data to work with. If football teams had a minor league, it'd be a different story. But maybe the sharpies are concentrating on better ways to measure individual prowess. That would fit some of the news stories and it would work.