Do you see Ole Miss winning the SEC any time soon? Houston Nutt would probably have a better chance of winning his conference and going to a BCS game at Kansas than at Ole Miss. That's why he would leave.
Tubby is a delusional choice even though he isn't employed? Really?
Harbaugh is probably the biggest reach, but I think he too would consider the job. He's a Midwest guy. Stanford is nationally prominent for academics, not their football team. California is nice, but he has to recruit against all of the Cali teams, and with higher academic standards. Kansas isn't that hard to recruit for. It's in the middle of the country so you can dip into all regions. Plus, they have nice facilities, a nice campus, hot girls, and oh yeah, that basketball school from Lawrence, KS won the Orange Bowl only 2 years ago...with a fat fuck as a head coach.