seems like they are going both for scheme fits and best player available for that scheme in their eyes, not necessarily biggest need. Secondly in importance, I think they are also taking a look next year's contracts with some of these picks.
The last few drafts seem to favor skill position in the early rounds and it would seem they think OL will redshirt the first year anyhow and will take prospects that are more raw in those positions. Just my take the last couple drafts.