The story in Marvel’s Avengers will incorporate a five-year time jump, and following that jump the Avengers will experience costume changes and personality shifts.
Revealed in a VentureBeat interview with lead combat designer Vincent Napoli and director Shaun Escayg, it’s revealed that following the catastrophic event known as A-Day that supposedly results in the death of Captain America and the disbanding of The Avengers, the remaining heroes go through these costume and personality shifts.
Napoli said, “Picking up five years later, where they’re at is very different from where they are in the beginning, which also gives us a very different — it’s not just costumes and aesthetics, but different personalities, different gameplay space.”
Source: IGN.com Marvel's Avengers Will Feature Costume Changes and Personality Shifts