Is Sadie Sink's casting in Spider-Man a sign that Marvel is looking to the future?

The Stranger Things star joining the cast of the superhero sequel is a breath of fresh air in a musty Marvel Cinematic Universe that keeps resurrecting the old guard The Marvel Cinematic Universe is in a somewhat peculiar spot at the moment. Faced with a nagging sense of superhero fatigue and the dawning horror that audiences might actually be yearning for something new, supremo Kevin Feige's response has been to - yep - bring back Robert Downey Jr, the guy who kicked this whole thing off in the...