That was briefly the original plan in Avengers: Endgame, according to screenwriters Christopher Markus and Stephen McFeely.
Christopher Markus and Stephen McFeely appeared at Comic-Con today and shed some light on their practices and ideas that almost made it into Avengers: Endgame and Infinity War.
The Avengers: Endgame screenwriters admit the idea was a bit too “extreme” and that the idea was axed right away.
The comments from Stephen McFeely and Christopher Markus were first reported by Comic Book.