I must admit I'm not a big fan of these part/part 2 titled movies. It just seems kinda lazy, unoriginal uninspiring. I understand it when a movie is based on source material, like the Harry Potter the Deathly Hollows part 1 and part 2. They just split the book into two separate movies, to fully flesh it out(and get more money😄).
But when it comes to mission impossible there is no source material, there is no book that you are adapting. I would have much preferred them to create an original title and then continue the story in a sequel. I guess in the end it doesn't really matter but it sounds more sophisticated. As a James Bond fan I would have never wanted them to call all 5 of Daniel Craigs movies Casino Royale part 1, Casino Royale part 2, Casino Royale part 3, Casino Royale part 4, Casino Royale part 5. Even though they cover the life of one Bond actor and the stories are just a continuation of James Bond those titles would never work. As a fan of Mission Impossible and Tom Cruise's work its disappointing.