In regards to Miami, I would not be surprised if they take a QB in round two.
The Dolphins have a #6 and #18 in the first round, #36 and #50 in the second, and #81 in the third.
Tua wasn't awful, but he wasn't great either last year. Most was due to injury, but at one point he was benched for Fitzpatrick. 34th in passing yards, 29th in completion percentage, 16th in passer rating. Miami could conceivably pick up a second tier QB as a Plan B contingency in case he does not progress at either #36, or by trading up from #50 (past the Patriots) in the second round.