I think the obvious spot the Dolphins must solve is the offensive line. With only the Center position being locked in, the team could use help at all other positions. Jon Martin is done...and I do not want him back. Richie Incognito has no chance of returning. John Jerry is not very good. Bryant McKinnie has done well, but is long in the tooth. Dallas Thomas was a lousy pick. Nate Garner is solid, but would help the team best as a back up/fill in.
Re-making the line is the offseason objective. It might be very possible to find a LT or RT in the 1st round and a good one at that. However, Eric Ebron is a stud and a difference maker. He is athletic. He has large catch radius and his skill set would match the balls Ryan Tannehill throws best. He will be a nightmare matchup in the Red Zone. He is even a little "bubble butted" and would be fine with his blocking.
Charles Clay has had an excellent year. However, he is not a true TE. I like Dion Sims and hope he can develop, but Eric Ebron is going to be a stud weapon in the NFL.