Nebraska returns their entire offense outside of JD. They play Minnesota at home on Black Friday, which is a huge game for them.
Recent results do not guarantee future success. If you had told anyone that Minnesota would beat Auburn to end last season after almost losing to South Dakota, Fresno State, and Georgia Southern back-to-back-to-back then they would have laughed in your face.
Nebraska has the personnel and the coaching to take a serious step forward this year. They have a decent chance of going 7-0 to start the season.