2) Phyla-Vell
Marvel fans would surely love to see Mar-Vell, the original Captain Marvel, turn up in the MCU. Seeing as the studio has gone with his successor Carol Danvers instead, though, it remains to be seen whether that’s going to happen. Instead, his daughter Phyla-Vell would be a great addition to the Guardians line-up.
Phyla is a significant heroine in the Marvel comics universe, as she takes up the mantle of both Captain Marvel and Quasar. Alternatively, she also goes under the original codename of Martyr. Whatever her superhero identity, Phyla is an important member of the team on the page. For a while, she even served as Star-Lord’s second-in-command.
It’s also worth a mention that Phyla and Moondragon are lovers in the comics. If they both turned up in a future movie, the MCU could have its first gay relationship on its hands.
It’s about time, don’t you think?