Joss Whedon defied expectations with his ambitiously muted, psychological approach to Avengers: Age of Ultron but despite his best intentions and genuinely interesting vision, this would be his only effort with Marvel Studios. It was a good effort.
Marvel Studios launched its second phase of films with Iron Man 3, a film filled with bold storytelling choices and irreverent humour that would become hallmarks of the MCU.
By perfecting the comic book superhero formula and creating the first big-budget shared universe with The Avengers in 2012, Joss Whedon and Marvel Studios came to define this decade of blockbuster filmmaking.
Tony spends the first half of the film worrying about his legacy but also trying to have fun with the time he has left. It's rather like MCU's superhero film challenges of the time.
Iron Man is a colorful, light, comedic film, and as the first film in the MCU it was responsible for establishing the tone and approach of the series moving forward.