the Oscar was the backbone of Japanese air power in China during the early and mid years and it should be added because the plane served as the base model for the 84 that came after. Its not going to be a popular plane though. . .its slow, it lack real firepower and lacks any real protection to pilots (all of these things were `fixed` in the 84).
I think penalizing IJN/A planes because of `poor late war quality control` is a bad idea. . .even the Germans suffered from a lack of quality control in the last year of the war but the K4 and D9 are given a wide berth in terms of speed, firepower and durability. . .the IJ planes should also be given their academic stats. If people insist on quality style realism - then every plane should have a `lemon factor` every time you take a new plane up except the Japanese would have more lemons. But at that point. . .it`s going too far.
More IJ planes would be a good thing imo. . .as it stands the Japanese are underreprisented and given stiff penalties because the perception is that industry in Japan suffered more then the Germans or the Italians. . .which is only the case after Germany and Italy fell to the Allies.