I'm arguing from an MA use standpoint as well as a scenario use standpoint.A6M2 can stand in for the Ki-43 better than a 109G6 can stand in for a 109G10.
Il-2 can sub for an Il-10.
The A6M can sub for a -43 better than a Yak-9 can sub for a Yak-1.
You started this thread and it was obviously about your want and desire in spite of your use of 'we' and Google.
Regardless of if the Il-10 was as significant, it was still a major ground-attack plane late in the war.
FA was the first ww2 game I played.......sorry if your a transplant but FA was .....well wanted to be what AH is but fell very short of it.and no it would not be "useless" by any stretch of the imagination.
It would not be used in massive numbers, true.However, against fighters two 12.7mm guns are light but serviceable. I have shot down a number of aircraft with the same two 12.7mm guns on the Ki-84 after running dry of 20mm ammo.The Ki-43 would also turn better than any fighter in the game right now, better than the A6M, better than the Hurricane and better than the Brewster
No models had 20mm. A trio of prototypes did, that is all.
I suspect Pe-2. (wild guess?)However that doesn't negate the absolute need for the Ki-43 in this game.