Perfect Foil for Brian/Roundtable Participant?

This thread was inspired by some comments in another thread. Who would do you think--whether plausible to add to the show or not--would make a good roundtable contributor?

My personal view is someone with a deep schematic knowledge. I don't know enough about football to know if he knows what he's talking about, but to my mind it's a person in the vein of Space Coyote. 

In general, I think Brian's strength is not only understanding scheme but having a strong analytical framework to put that scheme in a bigger context and derive meaning from it. Obviously, his focus on Michigan football over the years also allows for Brian to find trends in the program--from player development and coaching to playcalling. Anyway, I think this blend of scheme and analytics is what separates him from people who only do one or the other, though they may be more advanced at one or the other skill than he is.