Even Shadys off years are pretty good. Plus all the RB' s on this roster with the exception of Williams are seasoned vets. I doubt any RB coach is going to change them that much.
I'm assuming his job consists of "Just keep doing you Shady". And then he watches film with them. Seems pretty easy to me. Like anyone could do it easy. TL;DR Kelly Skipper will be just do just fine as RB coach.