Originally Posted by
Digifiend
Don't forget Sue and Johnny should be the same race, unless they copy the last movie and have one of them be adopted. So if you think Constance Wu could be Sue, you also need to consider an Asian Johnny. I assume Chance would be paired with either Freema or Logan, since those three actors are all black.
Also, Freema was Martha Jones in Doctor Who... and I can see her in the role, because that does seem similar to Sue (Martha was a trainee doctor, who ended up working with UNIT and Torchwood, military and clandestine operations - not unlike Sue secretly being a SHIELD agent, right?). I'm not very familiar with what the others have done.