Coulson might be dead in when Marvel's Agents of SHIELD picks up in its Season 6 premiere, but Clark Gregg will definitely be making his presence felt. IGN can exclusively reveal that Gregg will be directing the Season 6 premiere episode, "Missing Pieces." Check out the exclusive script reveal below: The Season 6 premiere, "Missing Pieces," is written by SHIELD showrunners Jed Whedon and Maurissa Tancharoen. Continue reading…