My first thought on this is cautious optimism.
I'm enamored with our offensive line, theoretically. Tunsil, Sitton, Kilgore, Davis, and James should be a good group if they can stay healthy, and if Tunsil progresses. There is also depth with Larsen, Young, and Brendel.
We do need that seam threat tight end still, but Drake and Gore should make for an effective running back duo (and I'd like to see us draft a player in the later rounds to compliment them and develop), our receivers are a different grouping with Amendola and Wilson replacing Landry, but Parker, Stills, and Grant also look to figure in heavily. We could present a lot of different looks with those five receivers, and I feel good about the opportunity for some big plays.
Tannehill, of course, is the linchpin. What sort of QB are we getting back? Will he take a step forward like he looked to be doing his first season with Gase, or will he regress to the pre-Gase era player who looked like he didn't deserve to start? Our season rests with Tannehill, because Lord help us if Brock Osweiler has to play. I still feel we should draft another QB.
Our defense also has a ton of question marks IMO. What are we doing on the line? We have Phillips at DT, but I don't trust anyone else we have on the roster to play next to him. On the end we have Harris, Wake, Quinn, and Hayes who should be a very good quartet. Our linebackers are Kiko Alonso and a who lotta question marks. Raekwon McMillan is like getting a deferred draft pick, but what will he be? Anyone else strike you as a starter? Our secondary has me a bit more comfortable. I like Howard and Lippett, and McCain and Tankersely provide solid depth. At safety, Reshad Jones and T.J. McDonald with Walt Aikens for depth seems pretty good.
So that leaves the draft to fill a few needs: Tight End, Linebacker, Defensive Tackle, Kicker, Quarterback, and overall depth.