It's widely accepted that the best way to construct a football roster is by being successful in the draft. One of the phrases I kept hearing and reading throughout draft season was "building through the draft"; how important it is, how it's the key to success in the NFL, how dynasties are built off it and so on.
And while it's true that teams that invest heavily in free agency seldom see a good return on their money, that doesn't mean that "building through free agency" is necessarily wrong - especially if your team's drafts have not produced the hoped-for results.