I'm going to approach this from a player point of view. I am going to do a position breakdown for who will and won't be on the roster next year
QB- This may be the year we finally move on from Tannehill. 3 years in a row of injuries and he wasn't playing all that well when he was in the game. I could see all QB's on the current roster not being part of the team next year. Projection- no one will be back next year
RB- I like the group we have and obviously both Drake and Ballage will be back, the question is about Gore. I do seem him retiring after this year but would take him back in a heartbeat if he wants to go another year. Projection- Drake and Ballage will be back
WR- I see Grant, Wilson, and Stills back for sure. Amendola I dont see coming back due to his contract and age and I see us trading Parker in the offseason or just removing his option year and letting him walk. We need someone more consistent than what he can offer. Projection- Grant, Wilson, and Stills will be back
TE- I hate this group.......HATE it. Derby just can't stay healthy and will be gone. Projection- Gesicki and Smith will be back, we will move on from Gray and O'leary.
Offensive Line- Welcome to the NFL Laremy Tunsil, you are finally starting to scratch the surface of what you could be. Swanson has always been a nice surprise and Davis is someone that has been playing decent this year. James drives me nuts, too many pre snap penalties and gets overpowered too easily Projection- Tunsil, Swanson, Kilgore, Davis, and Sitton will be back. We will move on from Larsen and James
DT- I dont mind the group of Spence, Taylor, and Godchaux. Depth is needed though projection- all 3 will be back
DE- This is where it gets tricky. I like how Cam Wake has been playing but beyond that....gross. I see us moving on from Branch and Quinn as both are overpaid for their production. Projection- Wake, Harris, and Hayes should all be back next year. This is a big area of need
LB- This is the last year of Kiko Alonso as a Dolphin. It was a bad and unnecessary contract from the start and he is just an average NFL linebacker at best. Projection- We will move on from Kiko and keep both Baker and Mcmillan as starters. This is another area of need for a 6th year in a row
CB- Howard has been good and I still have faith for Mccain as long as we keep him playing in the slot. The rest of the backups are not safe at all but for the love of god do we need a 2nd boundary CB in the worst way possible. Projection- Howard and Mccain will be back, I could care less what happen with the rest
Safety- We simply cant keep playing 2 strong safetys on the backend but there is no way we will get out of the Jones or Mcdonald contract until 2020. Projection- Jones, Mcdonald, and Minkah will all be back. I will move Mcdonald to a backup role and play Jones with Fitzpatrick on the back end.
Kicker, Punter, and long snapper have no changes.
We are stuck with a few players for an additional year because of all the dumb contracts we have but our Top 3 areas of need IMHO is 1)QB 2) Boundary Cb, and 3) linebacker
We have some nice pieces to build around but this defense will never be what it could be without a competent defensive coordinator. We need to bring in an experienced Defensive coordinator to fix the mess we currently have.