I think they return as the top rushing team, or at least a top three, but I think it will take more carries. Expect YPC and +10yd rushes to drop dramatically.
Unless the Sanchise lives up to his trademark name, of course. Then all bets are off, and you may be looking at the Super Bowl favorites.
“There is an old saying about the strength of the wolf is the pack, and I think there is a lot of truth to that. On a football team, it's not the strength of the individual players, but it is the strength of the unit and how they all function together.”--Bill Belichick