I can’t say how long the superhero movie bubble will last. I’m not some authority that can tell you when the Marvel Cinematic Universe will run out of steam or come to a narrative close. They’re still cranking out multiple movies a year and have transformed the streaming TV shows from throwaway side-stories to important gears in the greater Marvel machine. They’re making money hand over fist. Disney just built their second theme park thrill ride based on Guardians of the Galaxy. We have a long way to go before the wheels come off.
Meanwhile, Doctor Strange in the Multiverse of Madness has introduced, and then mercilessly killed off, the Illuminati from another reality. It was a hell of a roster reveal, showing us different ways you can have fun with an alternate universe superhero tribunal. Mordo was depicted as a wild card.