Originally Posted by MarvelKnight
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.
The Wrecking Crew are too small a threat for The Avengers. At best, they're cannon fodder henchies for a Thor sequel.
Needs to be a global/universal threat --- Thanos, Kang, Ultron, HYDRA/AIM, Kree-Skrull, MOE, etc.