We start to see leaders emerging, but all the options were picked at least once so that’s good!
Not declaring war against the US seems to be the most popular option. I guess I agree with this to extent that I believe the Japanese should have avoided getting the US involved by attacking the Dutch East Indies as they seized French Indochina. If the UK (who would be having a harder time getting supplies home because of a better German sub / air campaign) would be foolish enough to declare war, then the Japanese could proceed and take over with much less risk of seeing the US involved immediately (why would the US help the UK asset its own Empire?).
In late 1941, a stalemate could be reached in absence of seeing the Soviets or the USA involved.
UK is starving off, bankrupt and isolated and would have no interest in carrying on a fight. The Germans would have the UK acknowledge Italian and German North African conquests, the German claims on Western Europe (why wouldn’t Germany absorb Vichy France), Poland, Norway and the Benelux.
Japan with oil supplies from the DEI, could continue the colonial expansion in China and consolidate its empire.
Following the war, there would be 4 major world Powers:
Soviet Union (most powerful and numerous land forces)
USA (most powerful economy)
German Empire (best technology / military tactics)
Japanese Empire (dependent on other’s technology, but high potential)