Coulson lives! Long live Coulson!
This much we know at least for Marvel’s Agents of S.H.I.E.L.D., but the method by which Coulson will be returning is going to have to stay mysterious unfortunately. But that doesn’t mean that Clark Gregg doesn’t have some things to say about it.
I don’t know how you could not change going through what he went through in The Avengers. I think if he hadn’t gone through some kind of change, it wouldn’t be any good. That said, I don’t know if he understands how much he’s changed.
Some level of deception must have been perpetrated on the Avengers. It must have been. I think.
Check out the video of the interview: