G4 invade Russia with large stacks in Baltic, E. Poland and Arkhangelsk
The Russians can easily have as many men and tanks positioned in or Leningrad or Belorus or wherever during your proposed invasion. Not to mention the fact that you admittedly are moving your navy to a position of which it will take no less than 2 turns to return from, because you are not proposing the invasion of Leningrad.
Your said “large” stacks, are 3 medium stacks by definition, because they will all face a significant larger stack.
On relatively equal footing, your opponent then pools his resources to make his super stack crush your “large” but really medium stack, and you lose a bunch of units and your edge for nothing.
Medium stacks are the biggest mistake anyone can make in Axis and Allies, especially on the Russian front.
That’s a MAJOR fail.
J4 invade Russia with massive forces in Amur and landings in the north.
I am a big advocate of Japanese invasion of Russian Territory, but why J4? This is another axis fail. the average game length dictates that you should invade by J2 at the latest. Why are you waiting to attack the Russians as soon as your at war with everything else on the board? What are you thinking here?
I4 reinforce German defenses so any attack is a losing proposition for the Russians.
So instead of building units to conquer the middle east / africa, and secure Italies OWN nation objectives, which require all of it’s income (save for money spent on aircraft) You propose to build infantry, abandon the bulk stalwart of the Italian game, and mush a few extra infantry to the eastern front?
All three of these suggesstions are utterly insane, and only bolster my point that allies can force the win on a VERY regular basis, with strict playstyle.