I’m a huge Texas Tech fan and although I like Kliff Kingsburyas an excellent offensive football mind, he is not a very good college head coach and would likely not be a good NFL HC. He would be a great OC, but not HC. While HC at a Tech, Kingsbury is 35-38.
One thing I would endorse him for is his QB development. Before his time at Tech, he was OC at Texas A&M and developed Johnny Manziel, and before that he was at Univ of Houston, where he developed Case Keenum. At Tech, 4 of his former QBs are currently playing in the NFL including Pat Mahomes, Baker Mayfield, Davis Webb and Nic Shimonek. Kingsbury is famous for taking raw QB talent and making it into something. This year, his true freshman QB Alan Bowman was leading the nation in passing for a while before getting hurt.