I think there are a couple reasons for CJL not being a HC already.
1. CJL won't just take any HC job. He was never like that. He has to be familiar with the parties involved (President, AD).
2. He's first and formost a family man. His family has to like the move. If they don't, he won't take it.
3. He has a defense first philosophy and many schools are looking for Offensive minded HC's.
4. Yes, his age may now be comming into being a factor.
The true fact is, none of us know for sure. NEB is a good poster and states his opinion. I do as well. I'm for CJL and don't hold it against him. He's wrong but, I don't hold it against him.