Hey, that could be a great one, too, though I (or Marvel) would probably want to throw in a Wolverine team-up, since they both fought in World War II...
The Sentient Armor! Like the Venom symbiote with Spider-Man, but up to 11 and then some! Oh, not to mention the later/more recent comics having Tony...
Makes sense when you put it like that. Taking down Orchis from within on his own because he wants to prove a point to his doubters in the Avengers ....