John Wooten pulled that off. Hill hurt his ankle his senior year but had a 1st round grade like his Stanford teammate James Lofton. James was the 6th overall pick in the 1978 draft and Hill had better stats and was a 4 year starter at Stanford. But, for some reason the ankle injury dropped him down. Wooten brought Drew Pearson to the Cowboys, because of this, Wooten had huge influence on the 1977 draft. He convinced Tom Landry and Gil Brandt that Tony Dorsett was not to small and Tony Hill was not an injury risk.
Tony Dorsett, and Tony Hill was a great start to the 1977 draft.
It was a great draft!
Many teams in history have lamented the need for that "missing piece", that one player that can get them to a championship. They are usually wrong, for example, the Vikings getting Herschel Walker.
In the case of the Cowboys, they were "right on", to borrow a 70's expression. They had everything from the 1975 draft with the exception of an elite runner. Dorsett was a Ferrari engine that could score from anywhere and look good doing it. They were in the Super Bowl his rookie year and the year after that.
They also picked up two tackles that played many seasons, Jim Cooper and Andy Frederick. They drafted two QB's. Unfortunately, they kept the wrong one. You will find the other, Steve Deberg, in few "top" lists associated with longevity.