After seeing Prometheus a second time I went back to a casting dream for a possible Avengers sequel. Seeing Michael Fassbender and Noomi Rapace together a second time made be think how perfect they would be as the Vision and the Scarlet Witch. This is just the musing of a geek – I have no knowledge and assume Fassbender would not want to play another android.
If you have the Vision then you must have Hank Pym, Janet Van Dyne and Ultron - who created the Vision.
I posted before how both actresses who played The Girl With the Dragon Tattoo could play Wanda on-screen in an X-Men: First Class (Rooney Mara)sequel or Avengers (Rapace) sequel.
Again – I have no power or knowledge and will probably enjoy what Marvel decides but it’s fun to dream and play casting director!