- Chinese fighting efficiency. I think an event approach will be even more hated than the blockade events for Germany and I think it will exclusively screw the AI, but maybe you'll prove me wrong An alternate solution might be a "national doctrine" along the same lines as Bushido, Blitzkrieg and Great Patriotic War. Yet another alternative is INC file modifiers to reduce efficiency.
A doctrine may actually work. I'll have to actually look at what can and cannot be done with a tech, but this may hold some possibilities.
I was looking at dissent for several reasons. 1. The general apathy of the population. China was notorious for being unable to rouse the population to a cause. Sun Yat sen came the closest since the Qing dynasty first took hold. Chaing encountered this iin his campaigns against the warlords, communists, and the Japanese. Mao had the same problems, just that he gathered more support than Chiang (and had better lieutenants). 2. Corruption was endemic in China. The foreign economic spheres protected European and Jpaanese interests, and provided a great many criminal opportunities for Chinese "entrepeneurs." The corruption was so bad, and so systemic, that it existed, and was the norm in most of China, from top to bottom. The general populace saw this, knew this, and just carried on as usual. "Meet the new boss, same as the old boss." 3. The Chinese army had a devil of a time keeping troops in the field. Desertion rates were astounding (nearing 20% in 1943), and this greatly reduced the effectiveness of Chinese troops. As with all things, there were exceptions.
Before I begin fooling with dissent, the national tech option has possibilities (I hadn't thought of going that route). Also, is it possible to lower the starting ORG for just Chinese troops? Say, to 5% for miltia (notoriously unreliable), and 10-15% for regular INF? That way, even with the tech bonuses, the Chinese should still be behind the Japanese.
- Resource glut for Japan. A combination of North China resources, effective conversion, no world market blockades and low Japanese IC levels leads to Japan having no reason for expansion. Increasing starting IC might be an option but it's not historical AFAIK.
I proposed this before, but what about events for things like the creation of the North China development company? An investiture of resources to "improve" IC and INFRA in North China and Manchuria. I believe we can get three events from these companies (at least I only remember three being created), and could give some boosts to the Japanese. These would all be pre-41 as well.
Chinese tech & unit gain via events. Maybe this needs to be scaled back, but think back a few versions and recall the constant complaints about Japan (AI) annexing China in 1938. So far I've not seen any solution which consistently gives a stalemate in China while allowing for a historical Pacific War.
I think that the Chinese don't get enough from these events.

If you look at the investments made by "civilian" companies from Germany (and Italy), not only in terms of practical support and training, but in terms of manufacturing capabilities, and infrastructure improvements, and these evenst are actually under powered! While I don;t suggest any additional land techs (except maybe an art'y or two), I do think that investments such as those made by Siemens should be represented (primarily naval building). But, I'm not dead set on that.
- Japanese front against ComChi. As long as they are at war the Japanese AI will strive to build a powerful front against ComChi which screws Japanese efforts against NatChi. There's no AI parameters for setting different max front strength against different countries and passivity does not appear to stop the front from building up.
-->Dang commies screwing everything up as usual. What about restarting the Civil War a bit early? Often times, the KMT were more interested in fighting Mao than they were the japanese. The truce between chiang and Mao looked good on paper, but in the field was a different story. Should we experiment with a three way war in china?
On a semi-related note, why is Sinkiang a spearate nation? It was semi-autonomous, and under KMT influence. Does it really deserve nation status in HoI terms? I can see it as a liberate option, but have issues as a starting nation.
Also, I want to review the Xian Incident, as there are several things that can be expanded on, that jsut aren't currently covered. But, I'll work on that when I get to the Burma Road stuff.