Not sure I agree that every coach Purdue looks at has to be an air-it-out type. Lot of that just has to do with your personnel.So you want to compete with Wisconsin, Ohio State, and Michigan by primarily running the ball? Do you understand what that takes? That would fail miserably at Purdue...
Personally, I'd like to see more QBs who are not pure pocket passers and can do damage with their legs. That's what the NFL has moved to. Also the reason UM beat PU in the B10 championship: QB could get away from the rush and make things happen.