What defensive player are you taking at #3?
I don't believe people are ignoring the defense, but the defense is ahead of the offense right now. The fact that Grier said they must add playmakers to the offensive side of the ball shows they are looking at upgrades.
With that being said I wouldn't be shocked if a CB is taken with Miami's first pick this year (I don't think it will be at #3 though). Jones didn't play up to his contract (very rarely do high priced free agents do), and while X had a great year it's only the second time in his career that ne played a full 16 games. He's going to be asking for more money and Miami can get out of both contracts after next season. Flo's defense needs a strong back end to make it work, so adding a DB early is definitely not out of the question.