Re: Who would you let Joss Whedon kill in Avengers 2?
Meh, just don't be surprised if Iron Man dies in A2. It was foreshadowed in Avengers and if you have Thanos as a villain you can't get around death. It would be a serious cop out if they did not kill one of the Avengers in the film, and Iron Man would be the most appropriate.
He doesn't have to stay dead from now until eternity, just through phase 3, and then they can revive him in Avengers 3. Like I said, it would be similar to Spock's death in Wrath of Khan.