This article of Josh Siegel from The Hollywood Reporter explains how the trailer of Avengers: Infinity War clearly states that a passing of the torch will happen, leading to a new storyline for Phase 4. This includes a new set of Avengers, that could refresh the story developed within the Marvel Cinematic Universe.
Spiegel emphasizes how new characters like Doctor Strange, Black Panther and Ant Man have enough screen time to establish them as main characters of the film. Let’s not forget that Guardians Of The Galaxy are also in the mix.
Some weeks ago, I heard in a podcast how the MCU works more like a series than a collection of films. With the ending of Phase 3, we might see big changes coming for Phase/Season 4. Right now, there’s a renewed interested for Marvel among many audiences that haven’t seen most movies. Phase 4 delivers a new opportunity for audiences that have been engaged with lesser known characters like Guardians Of The Galaxy, Deadpool, Doctor Strange and Ant-Man.
Source:The Hollywood Reporter