I was just watching the 1980 Divisional Playoff with the Falcons.  I had forgotten the quality and depth of runners we had that year.  We wonder how to split carries between MBIII, Felix, and Choice today.  But the Cowboys of 1980 had:

Tony Dorsett (A top 5 all-time rusher)

Preston Pearson (The Man who defined the position of 3rd down back)

Robert Newhouse (A power runner who struck fear into opposing tacklers)

Ron Springs AND Timmy Newsome (Great runners in their own right who could have started for almost any other team).

If the 1980 cowboys could find a way to get all 5 of these guys on the field (and still maintain a record-setting passing game), there has to be a way to use all 3 of our talented backs.