If I was doing the coaching, I would consider every aspect. What do the schedules look like the next 5 years. The level of talent supposed at each place. The level of support I felt I would get from the AD after conversations. Learn a little about the fan base of each.
Check out facilities if allowed at both sites.
Then take into consideration of weather, the state and options I could do when not embroiled in coaching. IE hunting, mountain hiking, overall which state fit the things I liked to do. The things my family like to do.
Having a son born in Tennessee and living there for a few years. Being involved with Loretta Lynn's dude ranch in the past and having very close friends in Knoxville, I love Tennessee. Love Nebraska in a different way. Home
If everything at the University is the same, I would take Tennessee. Two reasons, it is a fantastic, beautiful state, and my attitude is you have to beat the best to be the best. I don't look for the easy way, Coaches, the level that these programs need don't either. If I am good enough I want to prove it against the best. The best by far resides in the SEC West. To win the NC someone every year has to beat Alabama. You get your chance there.
If I was Scott Frost, I would stay at UCF and finish my dream and promise. Be it two years or 5 years, or forever. No hard feelings from me if he decides to follow his dream, and not every Nebraskans dream/desire.