If according to some theories, the real goal of the Iron Man snap was not to kill Thanos but to correct the chronologies created by the time travel, remains that the sacrifice of Tony Stark strongly marked the spirits. However, this salutary act could have been avoided, several speculations relayed by CBR wanting that a technique used in the first part of the Guardians of the Galaxy allows the Avengers to destroy the Mad Titan, without suffering the fatal loss of its leader. Remember in the movie James gunn when Star-Lord steals the Power Stone from Ronan’s hands.
In order to share the burden of his power, the superhero team chooses in the final scene to join their hands. This technique would therefore make it possible to reduce the powers of the Gem and to divide its power, this being able to prevent the disappearance of its only user. Although the Celestial legacy of Peter Quill helped the Guardians in 2014 and it is only an Infinity Stone, where Iron Man has used them all, remains only the presence of Thor or even of Hulk on the battlefield ofEndgame could have allowed the Avengers to share that burden again. Perhaps this ploy would have avoided the death of Iron Man and the continuation of his story arc in Phase 4 of the MCU as we currently wonder about the legacy of the superhero played by Robert Downey Jr. We will ultimately never know, unless the Multiverse allows us one day to observe this possibility!