The Marvel Cinematic Universe marks a remarkable cinematic achievement. Despite a few missteps, the movies accomplished some amazingly in-depth storytelling, stringing together almost two dozen films to tell the stories of dozens of different characters. And for the most part, those characters got a reasonably satisfying conclusion by the end of Avengers: Endgame.
Of course, with so many different characters, the films couldn’t present everybody’s story in a satisfying manner. For example, let’s look at the Hulk. He has one of the longest characters arcs of all the Avengers and changes more than anybody…but none of the interesting stuff happens on-screen.