I think you're confusing being candid and exciting with being good with the media. I know you hate Ferentz's robotic question answering, but that's exactly what plays in the NFL. I can think of one guy in the league right now whose openly charismatic with the media, and that's Rex Ryan. If the Jets were going 5-11 every year, how long do you think those antics would play? Ask John McDaniel, Tom Cable, Mike Tice, etc.
I don't know how I got sucked into this debate because I don't think Ferentz is going anywhere, nor do I want him to. But there's a reason his name always comes up-- his skill set is well-suited to the pro game. In fact, I remember when this was the main complaint about Ferentz-- he was too pro-oriented for college, where every game counts. All I take from that is that there will always be complaints, even about a guy who is going to win his 100th Iowa game some time in the next 12 months.