Originally Posted by spideymouse
Not necessarily, but of the 12 MCU announced movies (both past and future) from Iron Man to Ant-Man, 9 of them have directors who have helmed features with comedic tones. Favreau, Branagh, Whedon, Black, the Russos, Gunn, and Wright all have infused certain levels of humor in their past projects, but I would chalk up the "heavy" comedic tone to Black's script more than any type of studio-led direction for the MCU.
Plus personally speaking, I love that the Marvel films are shying away from being 100% all grim and serious. I like seeing levity in comic book movies, the Nolan stuff burned me out of the grimngritty.