He could be a stud, but at what price? Barber is a fine back already, and they’d only need someone to split carries if they kept him. But to trade up to get McFadden (which is what we’d have to do) would take away the ability to get young talent at WR and CB early in the draft, both of which are truly needs, not to mention the hit that they’d take in the salary cap. Throw in the fact that this RB class is very deep, and I think that the Cowboys’ best bet would be to hold off and take either a Felix Jones or Jamaal Charles.
I think the playoff game against the Giants exposed him a bit. He's a nice back in the second half, when he's used sparingly in the first half. But it seems to be he isn't a guy who isn't going to be effective for all four quarters.