To go from Jon Favreau for Iron Man 1 and 2 to Kenneth Branagh for Thor and the very different world of Thor, it's about how to adapt to Coulson in a different setting and a different world while, at the same time, still have him be a part of the same world.
Clark GreggI was really sad after 'The Avengers' when I realized I was not going to have a part in 'Thor 2' or 'Captain America: The Winter Soldier.' But I'm not arguing with my fantastic plane and my really cool car.
Clark Gregg