If you want more Dr. Strange-like glimpses into alternate realities of Avengers: Infinity War and Endgame, there’s also an Art of the Movie book filled with beautiful production designs.
As he describes it, when Doctor Strange is kidnapped by Thanos’ goons, Tony Stark “was going to transfer his armor to Strange to protect him from Ebony Maw’s torture needles.”
Much like how Doctor Strange uses the Time Stone to examine millions of potential outcomes of the Avengers’ battle with Thanos in Infinity War, the film itself could have gone many different ways as it was written and designed.