Many things- where is Bucky? What happened to Hawkeye? Also, Ultron was a smaller threat compared to Thanos, so unclear why they would chose the robot over the mad titan who *canonically* beat them. Why is James so obsessed over his dad, but his mom is just... ignored? And then who decided to give her long hair? Besides her teenage assassin spree, she never had long hair. These are just a few of the plot holes. Not acceptable.
