If nothing else, blitzes are going to make them mix up their approach, and it's going to make them hurry. As has been said already, we were getting torched regardless, make them torch you with linebackers in their face. There's nothing bad that could happen from repeated blitzes that wasn't already happening.
Listened to part of a USC podcast yesterday and heard multiple times how everyone was saying they couldn't believe Iowa never pass rushed once. They basically couldn't understand why Iowa stayed in the coverage they did the whole 2nd half and just let Maiava stand there and work.
Yeah it's the d-line's responsibility to get to the QB, but they weren't. Instead of mixing things up Iowa just kept beating their heads against the wall thinking it was gonna work.
Oh and you know what? That time way back when when Iowa beat OSU? Iowa inexplicably blitzed the hell out of Urbs. It can work.