if the injuries to Barber and Jones have a silver lining, it's Tashard Choice. I don't think he would have ever had the opportunity to have the carries he did those last few games if those 2 guys had stayed healthy.
I dunno if he's an EVERY down back, but I think he can definitely be the starter, MB3 the 3rd/short yardage guy and Felix has the ability to step in for either of them b/c he does have that big play ability that can get key yards when needed (if not more). Spreading the ball around can keep them as fresh as possible going into the late season and hopefully a run at the playoffs. And that's the burden on Garrett's hands...you have 3 starting caliber RBs...how do you use them as effectively as possible.