I think the Ki-44 would be a fine fighter for 1943...and I do realise it does a few things better than a Ki-61 (accelerates way better, hmm, dunno about that), but...I have a problem with it being touted as "if we only had the Ki-44, PAC 43 setups would be so much better", because thats just bunk. Its *comparable* to a Ki-61, its not some uber plane. Yes, I would like to see it added in AH nonetheless. As for the Ki-43, that one too, but its hardly going to be a cure for an F4U-1, its just way too slow. I will say this again, in 1943 the best overall fighter in service with the IJ forces was the Ki-61 Tony, and its a "realistically workable" fighter vs the 1943 Allied fighter and bomber types.
I don't see the P-38F or the P-39D in the set either, so saying that the IJ set has all these holes in the planeset is just a bit choosey. There are holes in all the sets, thats too bad, but its just the way it is.