I can tell you why the Ki-43 wasn't voted in Aces High, I rarely see anyone land kills in a plane above 25 eny in the Late War Arena, let
alone anything with only a pair of 12.7mm's. Someone made a bet with me last tour and I landed 7 in a C202 - with just the pair of Breta's in the nose.
Problem is most don't have that kind of aim, let alone want a plane with simply a pair of "MG's in the nose". most dogfighters would love this sort of setup, problem is why take up a Ki-43 when I can get a Brewster with 4x50 cals?
My idea is the plane is simply to SLOW, way to high of ENY, with no GUN'S, and nobody is willing to vote on it, should it of been added in Aces High?
The Ki-43 should of been added in Aces high long ago with the He-111 which both are instrumental to World War 2 and should of been added already in game.
Now I wouldn't rush and create the Ki-43, with the handful I see land kills in something above 25 Eny, I highly doubt the trend of "ignoring higher eny" aircraft is going to break anytime soon the late war arena, although us handful that test them against late war will stand by our decision,
you don't see many 30+ eny aces in the Late war Arena, so adding the Ki-43 will not effect anything other then fill a few scenario slots or FSO.
Game Changer? nope.