Another point to add in the "cons" column where Zook is concerned is his failure to develop the talent he brings into his programs. He may possess the recruiting skills necessary to attract the top talent, but on the other hand he lacks the skills to develop that talent to its fullest potential. One Iowa-beat sportswriter dubbed Zook one of the "biggest wasters of talent in college football", and he was spot-on.
So many are still saying "Meyer won with Zook's players" back in 2006 after our Naitonal Championship run, but they don't stop to realize that (1) had it not been for Urban Meyer coming to Florida, Chris Leak and his teammates wouldn't have been coached up to the higher plateau that they were, and (2) the other 40% of the roster was either recruited by Meyer or, in the case of the older upperclassmen, Steve Spurrier.
I don't know about Illinois, but at Florida under Zook the team's overall academic performance was nothing to write home about. When Urban arrived, we had key players such as Ray McDonald, Dallas Baker and Steven Harris close to being academically ineligible - and the team's overall GPA was in the lower 2.0's which is unacceptable.
To paraphrase what George Santayana once said: those who fail to remember the past are condemned to repeat it. The Zooker is a perfect example of that.