Yeah, but the problem with Russia goes well beyond just an economic inability, its a logistical/production problem.
Amur is 7 moves from away from the nearest Russian production center (which happens to be Moscow) while it’s effectively 1 move away from the main Japanese production center, since Japan can drop in from anywhere along the coast.
The production numbers are likewise heavily skewed in favor of Japan. Russia has to divert resources from its production front with Germany to put new units into the far east theater, can’t afford new minor factories, and wouldn’t have anywhere to put them even if they could. Japan by contrast has effectively a single front, half a dozen locations that can support minor factory expansions within drop range of transports (more if they have a naval base along the coast of Southeast Asia), and plenty of cash to bring the war wherever they want to.
Honestly if you’re going to drop the value of those Far East territories to zero and carve them up into speed bumps, purely to keep them out of Japan’s hands, while simultaneously eliminating any possibility of a Russian offensive against the Pacific, you might as well go all the way and just take this whole region of the map out of play altogether. Or rather, take it out of play, at least as far as the Moscow crush is concerned.
This could be achieved by making Siberia impassible.
Isoltate the pacific half of the Soviet Union, and have Siberia divide the two. Put a production center on the Pacific side and make that the primary target if Japan wants to contest the Soviet Far East. Since aircraft can’t fly over impassibles, this would restrict the theater to a more narrow and manageable contest.
That might seem kind of boring, but it doesnt have to be, and it’d be a lot simpler to achieve. Then the calculus from Japan would be, “is it worth it to spend the effort destroying like 20 russian units for a handful of IPCs only to see your attack force bogged down in the frozen tundra unable to advance across the vast frozen wastes?”
You could still give the Russians a production center right before the impassible Siberia territory, since it couldn’t be used as a springboard towards Moscow anymore, there would be less risk in doing so. Basically you’d end up with a Soviet empire divided in two by Siberia, so they could still reinforce China from the western half, while the Far East would basically have to function on its own.
I’d rather go the other way and give Russia a connected production center that can actually reinforce their position in either direction. One which they have to hold, so it isn’t just a simple choice of redirecting all their resources towards Germany while running away from Japan. But an impassible Siberia seems like a workable alternative.
As for the Pacific islands. I’m sure with enough NO’s you could get players to pay attention to them. The problem I see with objectives like 5/7 island, or 3/7, is that it involves more tracking and memorization than I care for, and it doesn’t have them same feel of building momentum during the island hop. Those NO’s strike me as an ‘all-or-nothing’ choice, where either you think you can grab them all for a big bonus, or just decide it’s enitrely out of reach, at which point the map defaults to the usual situation where those islands are ignored. Not saying that a big NO bonus couldn’t work, I just think it would work better if it was added on top of islands that are already worth 1 ipc.