Panthers prepared for this by signing Rico and drafting Travis Etienne with Dallas' 4th round pick from the Mingo trade (damn, I'd feel a lot better with Rico n Etienne), so the Panthers run game is sitting pretty, still.
As for Johnathan Brooks, I love the decision to sit the year out because he's still young and needs to get healthy first, in order, to start his career. This safe approach is the avenue I wanted his former teammate Overshown to take with his 2nd injury, but DeMo is willing to risk it all.