@ncscswitch:
To be successful, you would have to be able to maintain your navy without fear of Japan cutting your supply lines, and land forces in mass every turn sufficient to prevent Japan land based counter-attacks, and maintain that level of naval and land control for 4 consecutive turns (from the initial insertion) to reach Moscow. Japan simply is not going to sit idly by while the US attempts that.
You assume that the US troops are headed for Moscow, that’s not necessary. If US can keep Japan fully occupied by having to constantly repel US landings in SFE/Bury and pump up their fleet the main goal is reached. This by itself accomplishes nothing, it mainly just stops Japan from taking India and Sinkiang, they might even be unable to hold onto India/FIC and China. I think it all comes down to a delicate balance, and the one that starts lagging will ultimately lose the battle and with that most likely the entire war.
I think the key thing is that it opens up for a british fleet to sail freely in the pacific. They can even without new elements to the region take several Jap islands by using troops from India/Egypt area and Australia. The initial US atlantic fleet should be enough to repel or keep Germany busy in Africa, while UK can concentrate on Norway/Karelia.
Without the UK fleet Japan will ultimately establish a foothold in Bury that US can no longer threaten, but in the right circumstances Japans income will decrease due to the lost islands, and US will instead outbuild Japan - or put the extra funds into the Atlantic. What this does is buy the allies time, so it’s only a choice when the allies are making notably more IPCs than the axis. You will have a Germany in good condition, but a limp Japan. You will have US troops in Bury/SFE that can withdraw to Moscow when time comes, a pacific fleet that can be redirected to protect islands, an atlantic fleet than can start putting serious pressure on Germany. A british build-up of troops in Norway/Karelia and a Russia in pretty good shape who has only had to worry about Germany for several turns, and probably several more while Japan starts from “scratch”.
Call it an aggressive “SJF” (slow japan first, as Switch introduced), but still having your mind set at actually killing Germany first.
But ultimately it’s an advanced and fragile tactic the way I see it.