FWIW, I think Mike Leach has made the HoF of life. There are too many characters such as him in the history of college football that have been, and will be, left out if the minimum metric for induction is a winning percentage. Dumb criteria.
Record books are for numbers. HoF "should" be for impact. I realize that makes it more subjective and potentially contentious to assess, but maybe that says more about HoF's than anything. They are kind of stupid. Mike Leach is in the hall of fame of life and he happened to be a pretty big deal in college football too. No question about it.