Bottom line is, you could put a WR in at H-Back or F-Back, and in the passing game he'd be an immense mismatch against a Matt Roth or Akin Ayodele in unfettered coverage. But, would that WR survive the kind of jam those bigger guys would put on him within 5 yards? Would the defense even treat him like an H-Back or an F-Back?
The Dolphins could very well jump to a 30 Stack defense (3-3-5 with Crocker and Bell as right and left safeties, Jason Allen as centerfielder) every time Dustin Keller is on the field in those sets. Would the Jets be able to counter that by running the ball on that undersized front?
Such is the danger with one-dimensional players...and it's the reason why, right now, Chris Baker is the more valuable player.