That is what CJ is for. Even if Freddy stars to decline say 2 seasons from now we're still gonna need 2 starting RB cause lets be honest, CJ is a good player, and I hope he turns into a great player, but I haven't seen anything from him suggesting that he is ready to step in full-time (ie. blocking/ dancing). If Freddy isn't asking for anything outrageous then we could be set at RB for the next few years.
Really we're in a great situation as far as our running game goes, I just don't understand why so many people want to trade Freddy. It's just opening up a hole on the team when we still have enough to fill as it is.