We run into the problem every year of having too many positions we need to upgrade and fix. With our poor use of FA, that means we have to hit big on multiple picks.
Using this year as a point of reference, we hit big on our first-round pick (starting LT) and hit rotationally with our second and fourth picks, but failed miserably on our third pick as far as first-year contributions.
We just can't count on making our weak areas into strengths by only using draft picks and cheap free agents. We may get lucky with a late-round pick like we did with Bland, but you are also going to have misses like Joseph and Wright. Or get lucky on a cheap free agent like Kearse, but miss on others like Washington.