So upon watching Avengers last night, for the 20 something -eth time as its on in the background while im working at home, i have some thoughts on what they may be trying to do with Coulson. I really dont think they dropped 4 or more references to the character Vision for no reason. So here is what I think. We will see him in the Antman movie. There will be some back story that explains that Hank built him for shield at some point in the past, and when shield wanted more for soldiers, Hank wanted out, which is why Coulson is the only one. I think we'll see Hank rebuild Coulson, maybe from the persuasion of Janet, since they were all close at some point. This would also tie Coulson to the two other Avengers. They may also tie in Tony in that the AI used to build Vision/Coulson may be based off the Jarvis AI and that maybe Hank helped Tony develope that system, but Tony never knew Hank took it further to a full android as it was kept secret with shield. ... Or he's just gone.. Lol .. Again, i dont think they would of dropped so many references though for no reason. I also think the name Vision will actually be the code name for Hanks shield secret project, as the android soldier is shield's vision of the future soldier since they had given up on the super soldier serum after so many failures. However, since Cap is back, they will probably try to open up the super soldier research again.