It's baffling to me why we wouldn't want Chris Johnson, Maurice Drew, or McFadden if the price is right. Lamar Miller and Daniel Thomas are not that good. Any of those three would be a big upgrade. Tannehill needs all the help he can get.
1. I believe McFadden has yet to play a complete season in his nfl career. He sat out something like 5 games.
2. Unless MoJo just stunk it up in Jax because he didn't care and this would be a breath of fresh air, he hasn't looked great. Will be 29 when season starts and will likel command a 4 year deal for top money.
3. I'd be on board with brining in CJ but he too will command top money. Someone will out weight risk vs reward and pay him. Personally, I see CJ as a player of opportunity rather than creating. If his o line is on point opening up lanes CJ gets a shot at the second level and can make magic happen. But he rarely can create a play when o line is sluggish. Basically what Miller is at this point.