How Marvel Studios locks in most of their movie visuals years before the cast is set

I enjoy the Marvel Cinematic Universe well enough, as both an avid comic reader since childhood, and as an adult who understands how the Hollywood hype machine works. One thing that has always fascinated me with Marvel's approach to movie-making has been their willingness to take risks on creative hiring—actors, and directors—while still maintaining a unifying aesthetic. — Read the rest