I love Hannah Waddingham. Ted Lasso, Apple singing specials, she’s a delight. And the idea of her in a Mission: Impossible movie is perfection. But she has very little reason to be in this story.

Through eight Mission: Impossible movies across three decades, Tom Cruise’s Ethan Hunt clearly had his favorite teammates among the Impossible Mission Force. Luther Stickell (Ving Rhames) and ...