I agree with humble.
Karnak, when at online I stopped talking about this since you seemed so upset that you wouldn't listen to anything else, but I hope you would calm down a bit and try it out with an open mind.
Even if the Hayate was modelled with its Ha-45-21 2000hp engine, the chances are that it would retain most of its characteristics as we see now. Now, in that case, would you still define the plane as 'crap'? I think not.
It seems you've expected so much in the speed category, and seeing how AH2 has changed from AH1 in speed/gunnery realism, rightfully so. But still, you emphasize so much on it particularly with the Ki-84 that you fail to acknowledge its other strengths as it is.
In a sense, under your definition the Mosquito would be a better 'fighter' than more than half of the fighter stock in AH2, but in reality it is not. There are many more things to what makes a plane great.
In that sense, while I fully agree that the data set chosen was a big disappointment, the Ki-84 is a very potent plane when it comes to combat.
Its basic handling at low-mid speed ranges is one of the best I've felt, and only at high speeds does it get heavy. Frankly, without much exaggeration it is easier to handle than even the Spitfire or the N1K2.
Very stable with harsh inputs and constant E bleeds right upto under 200mph, and when the speed goes under that, you can start using flaps, which is another big plus. Once the combat flaps are engaged the plane feels as gentle as alike a P-38, that turns like a Spitfire. It could have been a fluke, but during combat testing(..well.. just playing in the MA...) I was surprised to see that I was constantly outturning Spit9s... and able to gain a very very good gun solution.
The sheer excellency of the handling chracteristics itself is worth something - as per the experience of AH1 where Spit9s and N1K2s were so popular for their ease of handling.
Ofcourse, much has changed with AH2 and it takes a fast plane to catch up the resident 'monsters'. And again, in that aspect I agree that its a disappointment. But all other traits are satisfactory.
Now, Pyro has mentioned that the WEP issues are under debate and unclear. We have the previous past experience where the FM-2 was initially removed of the WEP, and then got it back again after a while.
If we can see a WEP system on the Ki-84, then I think it could be much more closer to the picture we had in mind. If it would allow it to develop about 20mph more speed at deck and about 15mph at alts.. then the Ki-84 would do about 344 at deck and 403 at alt.
So lets try and see what we can do to get a WEP system installed on our Ki-84, instead of going on and on with general complaints about whats done already.