There was an idea called The Avengers Initiative. The idea was to bring together a group of remarkable people, see if they could become something more. See if they could work together when we needed them to, to fight the battles that we never could. Phil Coulson died still believing in that idea, in heroes.
[The introduction of Carol Danvers as Ms. Marvel/Captain Marvel in ‘The Avengers: Age of Ultron’] would certainly be a smart move for Marvel to placate growing dissatisfaction over the lack of superhero movies led by anyone other than white dudes, which has indirectly led to the studio having a really disproportionate number of lead actors called Chris.