They were 39th in S&P in 2016, then 43rd in 2017. That's good for a team with some of the worst talent in its conference. The coach that followed him (Chad Morris) installed the Clemson offense and promptly dropped to 97th.
I'm very encouraged by what Enos did at Arkansas. I don't like what he did at CMU. But the most important thing to me is the market. The best teams wanted him. Other coaches (including people I talk to directly) say he's the real deal. The improvement at QB coach alone should make a huge. We go from Jon Richt to a guy handpicked by Saban to develop QB fundamentals.
He's had 1 good offensive year in the 8 years he was either HC or OC. That isn't encouraging at all.
Here's his hand picked offense at CMU