There are so many to choose from, LOL. In no particular order. 1. Hawkeye,Hulk,and Thor acting like childish idiots when playing video games. 2. Black Widow easily holding her own against and taking down opponents with superhuman strength. 3. Captain Marvel flying a propeller plane into deep space. 4. The team fighting over Falcon's mom's cookies. 5. The Squadron Supreme being space aliens whose real names are the same common names that people from Earth have. They should have stayed faithful to their comic book versions and have them be from an alternate Earth. 6. Not using (or even mentioning) Namor when they went to Atlantis or fought Atuma. 7. All of the Avengers piloting their own personal mech suits when they fought Thanos.