As a former college coach in a different sport, here's what I haven't seen: Adjustments based on personnel. I would think that with a thin WR room and a pretty solid TE room, we would see more multiple TE formations. Maybe even go with an extra OL from time to time. Add in a FB, and try pounding it on the ground with some play action mixed in to keep the D honest. Try some wildcat with Bruce who I believe is a former QB. Maybe I've missed it, but I don't think we've see much of these kinds of adjustments.
This! OMG this!
The opposing defenses are crashing the LOS every play regardless of where they line up. Go 22 personnel and gap block. Give the linemen a chance to get a hat on somebody. Defenses adapted to Iowa's zone blocking schemes years ago. The d linemen do not worry about gap responsibility- they penetrate because there is no threat of the QB pulling the ball and exploiting the vacated gap. They also know they won't get hurt off PA.
Man up and pound. Tomorrow will be a perfect opportunity to do this.