Coulson is already part of at lest one of the two main comic universes. He's a recurring character in TV Ultimate Spider-Man where he's voiced by Clark Gregg. So it's not like he's gone anywhere.
Some people think Coulson might actually be the Vision or the person he was based off of.
They never said he was dead, they just showed him getting shot and collapsing. They alluded to it, but it could also have been a ruse by Nick Fury to get the Avengers to work together.
unless they really suck.
so, there's your answer.
Some people think Coulson might actually be the Vision or the person he was based off of.