The film already showed Stark solving the key problem behind the Avengers’ time heist, but it did not spend much time on what he may have understood about the risks. A re-release gives Marvel a chance to sharpen that part of the story.
Tony Stark’s Time Warning Could Matter Again
Stark’s warning that messing with time can cause time to mess back has become more important now that the MCU has spent years dealing with timelines, variants, and broken realities.
That line could become a doorway into Avengers: Doomsday if Marvel uses the added scenes to suggest Stark noticed something larger before the Avengers defeated Thanos.
The idea would not require undoing his sacrifice. Instead, it would allow Tony Stark to influence the next Avengers film through information, warnings, or discoveries made before his final battle.
Robert Downey Jr.’s return to the MCU is already set through a different role, with the actor playing Doctor Doom rather than Iron Man. That choice avoids directly reversing Stark’s death, while still putting Downey back at the center of Marvel’s next major event.
Early concern over Avengers: Doomsday was tied partly to that balance. Chris Evans’ confirmed return as Steve Rogers also raised questions about whether Marvel would disturb the ending of Avengers: Endgame.
The CinemaCon trailer appears to have eased some of that concern by making Downey’s return about Victor Von Doom rather than a simple Iron Man revival.
Doctor Doom Could Create a Stark Problem
The new Endgame footage could also help set up a personal connection between Doctor Doom and Tony Stark.