Why are you using "formulaic" as a criticism? Every movie adheres to a formula it just so happens that Feige has tapped into a formula that generates fun and enjoyable movies for the masses but the thing that makes the MCU successful compared to DC or the Fox X-men movies is the care and planning that goes into it and staying true to the source material while not being a slave to it.
I couldn't give a wet fart if your superhero movie is "experimental" or art hause if the story and characterizations just plain suck.