What might change if Ernest King replaced Kimmel after Pearl Harbor instead of Chester Nimitz?
Short answerThe main expected differences are stronger demands for aggressive operations and resources, and a less accommodating relationship with MacArthur.
NotesBoth King and Nimitz were effective in bureaucratic contests. In this counterfactual appointment, King would press more aggressively for resources and demand more aggressive action from subordinate commanders. His relationship with MacArthur would also be less accommodating. Whether that would lead to MacArthur's dismissal remains uncertain.