I would like to see Japan support a G1 attack by eating Siberia, but in Balanced Mod, it seems hard to make that attack pay off. If USA is sending any significant forces west (e.g., one loaded carrier per turn), then Japan usually can’t afford to hold off the USA, fight for the money islands against ANZAC, beat down China despite UK-Pacific support for Yunnan, cope with the extra Russian infantry in Mongolia that show up when you take Amur, send a loaded transport to occupy the Soviet Far East, and send enough infantry and planes north to pose a meaningful threat to the Russian Siberian stack, all on an average income of only about 60 IPCs.
On the other hand, if you don’t take Amur, then you can’t get more than 3 IPCs worth of Soviet territory until you break through the Chinese lines near Kazakhstan, which usually isn’t until at least turn 4, and meanwhile the USSR is collecting another $4 or so of extra lend lease income from it’s national objectives.
So how can Japan best support a G1 attack on Moscow in the Balanced Mod? Should Japan give up on defending the Carolines, Phillippines, money islands, etc. in order to funnel maximum land units into Asia, and just stack the Japanese navy in Tokyo Bay? I feel like that risks letting the USA into Shanghai, Hong Kong, and Malaya. Should Japan just build bombers and suoport Germany by bombing Moscow? I’m not sure where Japan could use as an air base. I’m open to any ideas.