Maybe that is what they are going for if that is who they are casting Sharon Stone for. Basic it is that tie to the movie Basic Instinct and that she had such chemistry with Michael Douglas. Personally, Catherine Zeta Jones would be more appropriate to cast. She is married to Michael Douglas. She has done a number of action movies, the two Zorro movies, Entrapment, The Phantom, etc. She and Evangeline Lily look similar.
It was announced that Ben Affleck is now an executive producer on the Justice League movie. The position will allow him to make creative descions, like the script, casting, etc.