Like a young Marino working with Duper & Clayton. And it's not like Duper & Clayton were Megatrons who would shine no matter who was QB.
It would be tough to develop Tannehill if he was surrounded by a bunch of bums. And while we would all have preferred to have signed a Megatron WR, there were no Megatrons available.
(Note: I'm sort of playing devil's advocate. In the offseason, I actually advocated for Greg Jennings, since he would be a better fit).