9. Jessica Chastain
Few actresses are as highly sought-after and well-regarded as Jessica Chastain. The two-time Academy Award nominee took the industry by storm with her starring turns in The Help and Zero Dark Thirty, receiving critical acclaim and firmly cementing her as one of the finest thespians of her generation. Chastain has flirted with the superhero genre twice already, nearly snagging the role of Black Widow in Iron Man 2, and then again almost ending up as Dr. Maya Hansen in Iron Man 3 before having to drop out due to a scheduling conflict. But she's clearly interested in powering up, being quoted in several interviews as having a strong desire to play a comic book character and partake in over the top fight scenes. The real kicker here is her availability, and if an actress as in-demand as Chastain would be willing to commit to the kind of deal Marvel would be looking for to make Captain Marvel an onscreen reality.