Would another Amagi conversion have changed the war?

Would converting Amagi into a carrier have made a meaningful difference in World War II?

It could have helped, but one more carrier would not solve Japan's deeper problem of limited capacity for rapid wartime construction and replacement.

The answer argues that a lone additional Amagi conversion would not transform Japan's position. It would provide another useful fleet carrier, but not repair losses or sustain a prolonged building race. A more meaningful counterfactual would preserve Amagi, Akagi, Kaga, and other large hulls for early carrier conversion. Even that solution runs into Japan's deeper problem: limited infrastructure for rapidly replacing large warships after the conflict begins.