Steering Japan toward a better Pacific War outcome

In 1924, how could Japan be steered toward a better outcome in the coming war?

Avoid war if possible; otherwise broaden industry and transport, build a mass pilot-training system, prepare convertible carriers, and expand long-range submarine capability.

Avoiding the war offers Japan the clearest route to a better outcome. Within the counterfactual, investment from 1924 would broaden domestic industry and improve the transport links needed to deliver aircraft from factories to the services. Pilot training would have to produce a large pool of competent replacements instead of relying on a small elite. Ships designed for rapid carrier conversion could expand aviation capacity, while long-range submarines could threaten the American Pacific coast. Publicising Yamato's launch to foreign ambassadors and naval attachés is proposed as a way to make rival powers commit industrial resources to battleship responses.