Considering the money we can pay, we can get a good coach with credentials. When you make $5mil/year with a $15mil buyout, not many coaches, that we can get, are going to worry about only getting one or two years. Plus football coaches are overflowing with self confidence. I think coaches these days expect to only be at a program a couple of years, if not successful or uber successful.
We've only gotten "name coaches" in my memory (I'm also 60). Our most successful coach came to us as a young, but experienced and successful, OC. When we hired Leach, the rumor was that Sark (then at Bama IIRC) lobbied for our job.