To me, is Lamar Miller ready to be the starter and has Tannehill grown from last year, are the biggest concerns that I have right now. I believe the LT/RT positions will be resolved by the preseason.
Here are several issues for the Dolphins' offense:http://espn.go.com/blog/afceast/post/_/ ... title-talk
* The Dolphins do not have a legit and proven left tackle. Miami lost four-time Pro Bowl left tackle Jake Long in free agency. Former second-round pick Jonathan Martin is a better fit on the right side and must get stronger to make the switch. Second-year quarterback Ryan Tannehill needs time to get the ball to his skill players. Miami’s offense won’t be effective if Tannehill is on his back. This is the top priority for the Dolphins in this week's NFL draft.
* Is tailback Lamar Miller ready to be a starter? Miami let go of Reggie Bush, who rushed for more than 2,000 yards the past two seasons. Miller is a 2012 fourth-round pick who showed flashes as a rookie with just 51 carries. He led the Dolphins with 4.9 yards per carry. However, can Miller carry the load with 200-250 carries this season? If Miami doesn't have a consistent running game, its offense will be one dimensional.
* Finally, will Miami quickly develop offensive chemistry? There a lot of new pieces. Players like Wallace, Keller and Gibson must come together immediately in the offseason. There is no time for a slow start if Miami wants the championship-caliber offense that Hartline mentioned.