This is a VERY intriguing hire.
I have no idea if it'll work out, but consider: it's probably McDermott's most important hire (because you only get a certain amount of chances to hire coordinators before the axe falls on your neck - especially if you're an unproven HC), and he chose a guy who coached in two PROGRAMS.
Like it or not (and I like it), these guys are trying to build a PROGRAM. Why not poach a guy who has worked within the two biggest powerhouse programs in the history of both the NFL and college? Why not hire a guy who should at least bring analytics to the offense, and hopefully will bring creativity and versatility? Who comes from two places where they adapt scheme to talent instead of vice versa?
Hey, again, this may not work but you've got to give them credit for thinking outside the box a bit. McD has steel stones, I'll give him that.