I was reading Exiles and in one story arc, they visit a version of the New Universe. It is made explicit that the the current year of that reality was in the 80s.
Perhaps a movie also set in the 80s made in that era's filming style could work. There is a lot of potential in 80s aesthetic, just look up AI generated 80s dark fantasy made up movie screenshots.
https://knowyourmeme.com/memes/ai-ge...s-dark-fantasy
That style would make the world stand out from just being another superhero movie.