When a superhero property has a sequel, it usually only has to worry about the characters who were introduced in the immediate predecessor.
This has impacted the way that the creators at Marvel Studios will be approaching stories from here on out, according to the company’s president, Kevin Feige.
The Marvel Cinematic Universe is a different situation.
Each X-Men sequel kept its focus on the core team, and the Batman sequels continued the adventures of whomever was in the suit at the time, from Michael Keaton to Christian Bale.