Trading down is another option. But trading down means that you are typically setting yourself up for next year's draft. Miami may be able to trade their 16th pick for another second round pick in this draft and a second round pick in next year's draft.
That would give Miami the chance to get four 2nd round caliber players in two years. In theory, that could be four, young starters in two years. I'm not against the idea of trading down, if it is worth it. It has to be a good deal. But then again, I am not against trading up to grab one of these star Qbs either. But that too has to be a fair deal.