Dallas can look at CB/WR in round 1 and then consider RB/OL in round 2/3/4.
With Barber here it's not like adding a RB is a huge priority.
The Vikes have Peterson and have won how many games again? You could argue the Chiefs, Chargers and Vikes have the best running backs yet only SD scares anyone.
Miami added Ronnie Brown at the very top of the draft and hasn't been any good.
RBs just aren't mandatory for winning. They help but you can get good RBs in rounds 2,3,4.
Especially now where RBs basically share a position.
The Pats have been unbeatable with Sammy Morris and Kevin Faulk starting at RB.