You do it if you have NO choice. Yes we do need to come away with a QB and in that sense we can't be picky. But, you choose YOUR guy...the guy YOU have belief in, and then you do what it takes to get him. Now, I'm not saying the Dolphins can just do what might be impossible to do. Getting Andrew Luck is an impossibility. But you have to make the decision, is Blaine Gabbert your guy? Is Cam Newton? Is Brandon Weeden? Is Ryan Mallett? Pat Devlin? T.J. Yates? I'm not even going to mention the Washington QB's name.
You decide which of those guys you have conviction in. You don't just say oh well so and so is a 1st rounder and so and so is a 2nd rounder and we'll stick to our value board on this one, blah blah blah...if you have conviction on Blaine Gabbert but have conviction on NONE of the others...you go up and get him. Trade what it takes. This is the QB position, the most important position in football.