What they need out of this draft are solid starters (DE, S)
So I don't see Tannebaum trading up to grab a player in the 1st to target a position... But if anything I see him trading down to acquire additional pick(s) to use in maneuvering throughout the 2nd, 3rd, 4th rounds...
LOL...I agree 100% with your first sentence re DE & S.
The funny thing is I disagree 100% with your second sentence.I think he will trade UP in Rd #1 to fill one of these exact voids that you point out. We'll see...