Re: Emily Blunt = Scarlet Witch?
No and hell no to Blunt. She is a boring actress and a boring choice for Wanda. Fans are continually trying to shove Blunt or her equally uninteresting husband into the MCU, without any cause that I can see.
In its recent casting decisions Marvel has managed to find good actors who were definitely surprises, like Chris Pratt, Emily Van Camp, Lee Pace and even Robert Redford. None of those actors was ever mentioned by fans or entertainment sites as candidates for the roles they landed. Hopefully the studio will continue to surprise us by selecting people who are perfect for the roles, yet whom we would never have suspected. Blunt, already having been cast as the Black Widow (before thankfully being replaced by Johansson), isn't in that category.