In an interview w/the source, he states there's no excuse for the actors of color to be in secondary or peripheral roles. “
The fact that they put any ethnic minorities in that [show] means that there should be space for bigger characters. Because you’re not just saying ‘OK this is purely a white world, and here are very story-driven reasons why that’s the case.' You are interspersing people of colour into it and
so therefore it’s a conscious decision to put them on the margins, as opposed to put them front and centre. Even if for whatever reason, it’s a world in which people of colour in those stories are subservient, or they are more in a helper role, that doesn’t mean they can’t have prominent storylines. All you have to do is shift the focus to focus on those characters.
“So for me, there is absolutely no excuse in a show like that why there aren’t more prominent characters of colour.”
He also talks about how he'd like to see someone besides a white man play the Doctor. "I don’t think there is anything about that character that is rooted in white maleness. There are going to be people who are going to resist, on the basis of tradition, but I think that’s absolutely a character where from a story point of view it doesn’t undercut the story in anyway. So yeah, I would be all for that.”
He also gets some quick promo of praise for the cast of his upcoming film "God Particle" (which comes out February 2017) after talking about how great it was that John Boyega was cast in Star Wars. “You know, I think what [JJ Abrams] did with Star Wars was fantastic, and he’s the producer on God Particle as well, and our cast is myself, Gugu Mbatha-Raw, Zhang Ziyi, Daniel Brühl… you know, it’s a group of actors who’re from everywhere.
“We can all, I think, hope that our future is gonna be more colourful than what our past has been, certainly in terms of cinematic depictions.”
He talks Queen of Katwe and Disney some more @ the
source