PFF ranked MJD as the second best RB in the league last year. He was the Jaguar's top ranked receiver, and he was their 4th best pass blocker, beating out three of their starting OL, and every other fullback and halfback on the team. If I were in charge of the Jags, I wouldn't give him up. If they do decide to though, we'd be stupid not to pursue him.
Skill at RB correlates with wins much more closely than skill on the OL does.
For example, which team had the worst play at LT last season? The Packers, 15 wins.
The best play at LT? The Eagles, 8 wins.
Which team had the worst play at RB? The Browns, 4 wins.
The best play at RB? The Saints, 13 wins.