Wanted to throw out some new names and one that has been discussed already.
My top pick I think is still Craig Bohl he has experience as a coach and DC at a major program and now years of successful HC experience. He should know how to recruit at a D1 level from his time at Nebraska unlike Glenn.
Other names I have not seen but would be interesting to look at:
John Chavis DC at LSU
Bud Foster DC at VT
Brent Venables DC Clemson (formerly at Boise so he knows the region)
Dick Bumpas DC at TCU (knows the conference)
I also think we need an OC that will stick with the spread b/c our O line is not ready to be more conventional and we already have a good offense that should be able to compete. I am not set on getting a defensive guy as head coach but that is our biggest weakness.