The death that kickstarts Civil War II is clearly going to be War Machine, Bruce Banner, Wonder Man, Steve Rogers or Bishop. We know that it's a male, an a-lister and these are the only real options.

Anonymous
brevoortformspring:
That’s a list of five characters, so there’s nothing clear about it. If you guess every possible outcome, you’re going to get some things right.
Also I’m pretty sure Wonder Man is already dead. As dead as he ever gets, anyway.