Re: What other Iron Man villains should appear in a sequel
Madame Masque. But that should probably be for after IM3 since that film will almost certainly be the Mandarin show. But Madame Masque and the Maggia would be an interesting new direction for the franchise.
Also, I hope she's got dreadnaughts or ani-men or whatever she normally uses.
MCU - $7 billion and counting. Next up: kicking Harry Potter's butt.