I just don't understand why Miami's front office would even put it out there. Unless the media is running with partial information. Why say you want a top 10 pick? It makes no sense and, to your point, the team would have to have the #1 overall pick or #2 overall if you are convinced on another qb other than Tua. To be that bad, the Dolphins would likely have to start Fales or bring in a Mark Sanchez type quarterback.
I actually like Haskins better than Herbert at this point. Lock is intriguing simply because he has a rifle and can make all the throws. He could be a coach killer, though, with his inconsistency. I love Murray, with his build my only real concern. Can he take the pounding?
Perhaps, the front office is putting a smoke screen out there, perhaps not. But, if you are convinced on a quarterback in this draft go for it. If not, build the lines.