Honestly, I don’t think I really agree with the OP here. The reality is, we haven’t spent a lot of draft capital on defense as opposed to offense. They have drafted some solid defensive players, but no impact players save for maybe Lawrence. But what do you expect when there are virtually no top 10 picks in that bunch? But a lot of what they have drafted on defense has been adequate based on draft position.
I think they have been exceptional drafting on offense, partly due to their strong showing in the QB department, but also because they have hit on their top offensive selections. They have been simply adequate on defense.
The one pick defensively that really stings for me is of course Taco. You could question that pick without hindsight and his bust really hurts when you rarely spend a 1st rounder on defense to begin with. They really need to allocate their highest selections in the draft to defense to improve it. I think they have a good opportunity to do so this year.
So in short, I think the cowboys have drafted above average offensively and more or less average defensively, while spending considerably less capital on defense. Spend more on the defense to balance out the team, especially while you have a high powered offense locked up.