How does marvel choose a director for a new mcu film?

Quick Answer
Marvel selects a director for a new MCU film by considering the director's prior work and suitability for the specific project, as seen with Destin Daniel Cretton’s appointment for Spider‑Man: Brand New Day.
Explanation
The decision to appoint a director for a new Marvel Cinematic Universe film is typically made by Marvel Studios in collaboration with the film’s producers and, when applicable, the rights holders. For Spider‑Man: Brand New Day, Marvel Studios partnered with Columbia Pictures and Pascal Pictures to bring Destin Daniel Cretton on board as director. Cretton’s previous feature work earned him recognition that aligned with the tone and audience expectations for the new Spider‑Man installment. While the specific criteria and negotiation details are not publicly disclosed, the example demonstrates that Marvel often selects directors whose filmography and artistic approach fit the narrative goals of a particular MCU entry.