So now we’ve got an official announcement about Fear Itself….and a sixth teaser! Win!
Well, if Tony is afraid of leaving behind a legacy of military war suits then….wait, no, he’s already been through the Armor Wars. It’s a long established fact that Iron Man does not want bad guys getting possession of his armor, or for it to be fully weaponized as a weapon for war. So this is probably, along with the Hulk’s, the most obvious fear in Marvel.