The MCU has plenty of films in production, Captain Marvel, Black Panther, Avengers 4, and Ant-Man and The Wasp just to name a few. Disney has no plans to ever stop making Marvel Films. Marvel Studio head Kevin Feige spoke about the cinematic universe with Vanity Fair.
“(Marvel is) 22 movies in, and we’ve got another 20 movies on the docket that are completely different from anything that’s come before, intentionally.”
Marvel introducing the Guardians of Galaxy was a rewarding risk for the company and allowed the studio to expand their movies to cosmic adventures. So fans can possibly get more movies with heroes on different planets. The studio even managed to change directions and put Thor in space with Thor: Ragnarok.
Disney’s Bob Eiger tells Vanity Fair that they have the rights to 7,000 characters while noting, “We’re looking for worlds that are completely separate, geographically or in time, from the worlds that we’ve already visited.”
Disney is also in buyout negotiations with 20th Century Fox. This would allow Marvel to reclaim the rights to the X: Men characters and possibly bring back the Fantastic Four. Even though leaving the Fantastic Four on the back burner might not be such a bad idea.