Most Marvel Cinematic Universe fans will agree: Anthony and Joe Russo have been game-changers for the frnachise. The directing duo made the jump from TV comedies like Arrested Development and Community to completely transforming the Captain America movie franchise with the highly-acclaimed Captain America: The Winter Soldier. After that, they made one biggest MCU event films yet, with Captain America: Civil War, and look to up their own game with Avengers: Infinity War next year.

While Infinity War is in post-production, The Russos are already back on set shooting Avengers 4 - but a new report indicates that it could be their final MCU movie.

Josh Brolin will be playing Avengers 3 and 4 archvillain Thanos, and while out promoting his harrowing new film Only the Brave (Read our review HERE), Brolin may have inadvertently revealed to Collider that the Russos plans to leave the MCU after Avengers 4:

"...I think that they’re in a position very openly and raw-ly where they’re like, ‘We would never do this again. This is a one-time deal. To put this many successful actors together is such a pain in the ass, but it’s been worth it. We’re doing two movies. One back to back, and this is it for us. Then we’ll go off in another direction,’ but this is a very, very, very ambitious project that I think is going to pay off in a big way.”

If that is indeed the plan, then fans should definitely give the filmmakers their collective blessing to move on. The Russos have lasted longer in the franchise than any other directors, and (as of writing this) the consistently of their critical and box office success has only been matched by James Gunn's Guardians of the Galaxy films. By the time Avengers 4 is in theaters, the brothers will have added pulling off the biggest event films ever in movies to their respective resumes. If that doesn't earn you some a graceful retirement from the Marvel machine, what does?

Avengers: Infinity War will be in theaters on May 4th, 2018; Avengers 4 (official title TBD) will be in theaters on May 3, 2019.