So, let’s get this out of the way right off the bat: Josh Brolin’s portrayal of Thanos is phenomenal ... Endgame has ruined the character. Black Widow never recovered from Age of Ultron ...
But that's not originally how Black Widow was to go out. "Endgame" coeditor Matthew Schmidt told Business Insider that originally the scene on Vormir involved Thanos and a lot more fighting.