So much can be said to reply to your statements above. 1. you say Iowa is not a marquee program and it is not even if a definition of a marquee program is mostly Top 10 in winning and recruiting. Iowa is not that. But dont underestimate why these coaches just want a chance to coach in the Big 10, they are aggressive and competitive and want the challenge and money. And marquee can be winning 10 games a year which some coaches think they could do at Iowa. So your logic of not a marquee program would prove we cant attract a known, good coach but I disagree.
Do you think Luke Fickell is unproven? Just wondering???? I dont!!! Born and raised in Ohio, played for OSU, from Big Ten country and the conference, he could almost double his salary at Iowa and get back into the Big 10 to try and win titles in the 2nd toughest conf, and a close to first best conference. He is a winning coach, proven over the short term.
Hell, Hayden Fry was very proven with 18 years of top coaching but he came to Iowa (maybe money and a change was part of it but I also think of the challenge of the Big 10 and playing in the huge stadiums is a big allure).
I always wondered if Chris Petersen would have come to Iowa around 2012 when he went to Washington from Boise St.
You can win at Iowa and it is proven over the last 42 years. Great facilities and fans and support.
I am not sure what other coaches are out there that might be somewhat known and proven like Fickell, but again not many, so sometimes you have to have the right timing to get someone to Iowa.