I am glad the Cowboys did not make any trades. Chase Young is no better than Armstrong or Sam Williams. Sweat and Williams were way too expensive.
Bears CB Johnson was way too expensive in draft capital and there was no way the Cowboys could have signed him as a free agent.
Assuming a trade, which players were you willing to cut?
A backup OL would have been nice but 31 other teams are looking for the same thing.
Long term, a team has to keep their draft picks, draft well, choose undrafted free agents well, and develop the players the team drafted. Players need reps in practice and playing time to develop. Had Bland or Bell had veteran players in front of them, they never would have developed.