In the past, Emily Blunt was Marvel's first choice to play Black Widow in
Iron Man 2 but she passed on it and it eventually went to Scarlet Johansson ("The Avengers"). She was also offered the role of Peggy Carter in
Captain America: The First Avenger, but she passed on that as well. That role eventually went to Hayley Atwell. Because of those choices Scarlet has become one of the highest paid actresses in Hollywood and Hayley has managed to get a spin-off television series based,
Agent Carter. Suffice it to say, Scarlet and Hayley owe Emily a thank you for her pickiness. It was assumed that Blunt would never land a Marvel or DC Comics-like comic book role, but a new rumor claims she is up for an undisclosed role in
Batman v Superman: Dawn of Justice.
"The actress Emily Blunt will land on billboards worldwide with her film 'Edge of Tomorrow', in what appears to be a great science fiction role. Now her name returns to the orbit of comic adaptations with her possible incorporation in 'Batman Vs Superman', directed by Zack Snyder. A film that has been shooting since last month." - El Multicine
Translated by soforizo
Let me stress, I don't know how reliable or not this website is, so take this rumor with a grain of salt.
Currently, Emily Blunt ("The Devil Wears Prada") is doing press for the new comic book movie,
Edge of Tomorrow. She's been earning rave reviews for her performance as a kick-ass soldier who trains Tom Cruise's character on how to harness his new alien-abilities in order to save humanity.
BATMAN v SUPERMAN: DAWN OF JUSTICE - Zack Snyder will direct. It's written by Chris Terrio, from a screenplay by David S. Goyer. The film stars: Henry Cavill as Superman/Clark Kent and Ben Affleck as Batman/Bruce Wayne. The cast also includes: Amy Adams as Lois Lane, Laurence Fishburne as Perry White, Diane Lane as Ma Kent, Jesse Eisenberg as Lex Luthor, Ray Fisher as Cyborg and Gal Gadot as Wonder Woman/Diana Prince. Will arrive in theaters May 6, 2016.