I've been of the opinion, for a long time, that the Cowboys would be well served to attempt to add a modern day Preston Pearson. That's a tall order, because Pearson might have been the best third down back to play the game.
This is a long winded way of saying that I'm intrigued by the thought of adding Warrick Dunn. Obviously, Dunn would be, very much, a short term answer to that Pearson role. But Dunn still can do some interesting things in the passing game.
Julius Jones, I think, still can be a decent NFL running back. I don't dismiss the idea of his value as a "counterpunch" backup to Barber. But Jones has been a disappointment, to me, in his contributions to the passing game (which might be more a fault of scheme than of the player). Jones would be a solid backup, but I like the idea of getting that player in the draft. I'm still not completely sold on the notion that Barber, given his running style and past workload, is a long term 20-30 carries a game guy. I think the Cowboys would do well to have another option, the younger the better.
Because I would love to see Dallas pick up a third down back who could be a dangerous threat as a receiver, I probaby would prefer to see them move past the Jones era.
It's not likely Jones will be an option, in any case. If he is, the Cowboys certainly would be better off with him than with some of the other players available, so the idea shouldn't be dismissed.
But wouldn't it be nice to have a number three back who offers something different? Again, a Preston Pearson...