Re: Who should be the villain in an Avengers sequel? (Poll)
Ultron is the obvious choice, but if they can't get Pym routed in some form to present day then I agree he should not be used.
I think if not Ultron, maybe the Wrecking Crew?
Thanos has to be saved for number 3 I believe. But I also think if they decide to do more than 3 Avengers movies he should be saved as the ultimate test for them.