First time poster here, but often when I play as Allies I build one humongous fleet in the Pacific and beat the Japanese in the first 5 rounds so I control the seas, I will probably have to retreat to the Carolines or Hawaii to reinforce/provide cover for the transports, but then I will usually leave the Pacific alone. I will plant my huge fleet outside Tokyo Bay and take Korea and build an IC. This is about as much as I usually do in the Pacific, funnel a few transports, enough to keep Japan honest, but no serious commitment. But with Tokyo Bay blocked Japan tends to turn their focus to just making it a land game in my experience. I have found that keeping Japan from their one major IC tends to be enough for me.
Although one negative, this tends to make for some LONG games, as Europe is usually taken care of, but then Japan has an insane amount of infantry paired with airplanes in China/Central Russia for counterattacks.
One last positive to this tactic though, this tends to provide some serious cover for ANZAC and this strategy helps them the most IMO.