Here is where we disagree omega. A full on kgf or kjfWOULD be the way to go in a total war, which is why the vc conditions exist.
I prefer the KJF in a total war because Japan is much easier to contain and render irrelevant with a concerted action from all Powers.
The Germans slowly expand in Russia and they can only gain so much from doing that.
I think that the price for leaving Japan entirely alone with the US (Hawaii and Anzac falling) and the trouble that follows, outweighs the incremental benefit that you get from going all out against Germany from the beginning, as opposed to still spending some in the Pacific to render the starting US forces there a potent force that prevents unreasonable Japan expansion.