Well... Kirk Ferentz is a leader and someone you want as the head coach. Having said that... he is paid to win football games and failed this year. The loss of our Defensive Coordinator Norm Parker hurt badly, and we don't even know if he will be back.
I would look at Dave Doeren of Wisconsin... he has done well every place he has been. With little chance at ever passing over Bielema for the head coaching job, perhaps he would be interested in Iowa? (yes, I am liking the Badger coaches due to same style, better results at the moment). If not Doeren, then what about Kevin Cosgrove? I know he moves around quite a bit and that is reason for concern, but his experience from working for Illinois, Wisconsin, and Nebraska and Minnesota is a benefit. I would hope KF would call Barry Alvarez and ask a bit about him first and see what he has to say, as I get the feeling something isn't exactly right with him off the field?
On offense, KoK is having problems, and the inability to coach a two minute offense or utilize clock mgmt is too much. I think Ferentz has to at least look around and I wish Iowa would go after Paul Chryst of Wisconsin, but doubt he would leave as he seems to be a die-hard Badger AND/OR offer Bryan Harsin of Boise St. He isn't going to move up at Boise and Iowa/Big Ten might be a move he is interested in? Lastly, that redheaded fella (Mike McQueary) that looks like he wants to kill JoePa on the sidelines of the Penn State games... he seems like someone who would run a great offense for KF?
You could always find another job on the team for KoK... but I think it is time to at least look at replacements. This would give Iowa a couple guys we could look at for a future head coach when KF decides to retire or move on similar to what Fry did for us. KF isn't building much of a coaching tree like Fry did.