>The Russos considered reserving the snap for AVENGERS: ENDGAME, but ultimately decided ending with it would be more impactful.
>The movie originally featured the encounter and reconciliation between Captain America and Iron Man, but the Russos decided to save it for AVENGERS: ENDGAME.
>Early drafts featured the destruction of Xandar, and Glenn Close was set to return as Nova Prime before the sequence was scrapped.
>Early drafts detailed Thanos’ childhood in Titan and the recruitment of the First Order, but these were ultimately deemed superfluous.
>Early drafts went through multiple iterations of Captain America’s arrival, such as him only appearing during the Battle of Wakanda to rescue Vision from Corvus Glaive.
>Early drafts went through multiple iterations of Thor’s quest, such as seeking advice from the spirit of his grandfather Bor in the netherworld.
>In early drafts Captain America, Black Widow and Falcon are introduced preventing terrorists from obtaining nuclear weapons. Sharon Carter would be operating as the team’s liaison and be in a relationship with Captain America.
>Early drafts featured the Hulk bursting out of the Hulkbuster and joining the battle. This was scrapped to give Banner a victory entirely his own.
>Early drafts addressed Falcon and Winter Soldier’s friendly rivalry, with Falcon humorously trying to trigger Winter Soldier's brainwashing.
>Early drafts addressed the failed relationship between Banner and Black Widow, with the couple admitted they both changed too much in the years they spent apart to get back together.
>Early drafts featured a longer journey of Thanos into the Soul World in which he meets young Gamora in an endless river of the innocent blood he spilled on his crusade.
>Early drafts featured a longer fight between Doctor Strange and Thanos in which they battle across dimensions while being observed by Living Tribunal.