Marvel Studios wrapped up its “Infinity Saga” with 2019’s “Avengers: Endgame” and “Spider-Man: Far From Home.” And with that, the book has been closed on some of the MCU founding fathers, including Robert Downey, Jr’s Iron Man and Chris Evans’ Captain America. And in their place, it appears that Phase 4 of the MCU is setting up a new generation of heroes, with comic book fans thinking there might be a “Young Avengers” project in the works.