It all depends how the board breaks, but I think we're a lot more interested in a deep rotation in the defensive front 7 than people might be thinking. We can very easily upgrade two positions in that rotation significantly with the first two picks.
Some people like to say CB is a weakness, but we've only lost Moore while we've added Corey White, get Claiborne back, and are getting Patmon heading into his second year. I think there's almost zero chance we're going to release Carr this season, so we're actually a bit deeper there than we were when the season ended last year. Safety we could definitely use an upgrade, but it's a bad draft for S, and anybody who's a sure improvement will be gone by pick 40 or so.
Offensively, not worried about RB, either way. We need a swing OT and a backup QB. None of those are great-impact moves, and the QB is not coming out of the draft, anyway.
So I'll stick with the front 7 and say that a SAM or a DT make the most sense with the current roster. Though another DE would have limited impact this season but make a ton of sense for next year if and when Hardy walks.