I have meant to write this for a while but kept forgetting so, I just want to say I know he didn't die. Remember the scene where "Coulson dies" well Fury says he is dead and the SHIELD agent says Paramedics are on their way. Fury replies they're already here but we know they aren't there. Now their is only one reason to lie about that and that is it is a robot Coulson.
I know it is kinda late for this topic but I just wanted to say my opinion...do you think he is dead?