Yeah. the specifics of how to implement that stuff and what players you do or don't need is not my bag either.
What I wonder is what a new OC will have to say about Ben and Conner? Does he come and tell Tomlin, Colbert, etc. that his breakdown of the film shows a QB that can still get it done or one that is washed? What about Conner? Does a new OC see a dual-threat RB (lets leave health aside for a moment) or does he see a flawed below the line back?
I guess what I am trying to say is do they look for an OC that says "I can get more out of the roster you have (and yes I know that Conner is a UFA)" or do they go with a guy that is more "This is what I run and you need to get me these guys so I can run it."