[Davew]

dont you think we have enough spitfires???????????????

No.
And the ones we do have aren't right.

You talk about the PTO, and the Ki-44. That aircraft entered service in '42, was disliked by the pilots, and was used in relatively small numbers (and was butt ugly, but thats beside the point). The version you speak of is the Ki-44 3b which was the last one produced out of a total run of just over 1000 aircraft. Plus, they were just about exclusively used for home defence, but Il2 models front line service.
The Ki-84 was rated as one of the best fighters in the pacific theatre. over 3000 were produced, and contrary to your assertion, it was faster than the Ki-44. 392mph vs 376mph. The Ki-84 was also a front line fighter. That's probably why it's in the game and the Shoki isn't.

But compared to the Spitfire with 20351 units produced, which served on every front of the war, was one of the two most important allied aircraft in the ETO and which is currently incorrect in terms of its FM, neither of those two aircraft are especially significant... For someone that looks for historical play, would you not like this aircraft to be correct?

I'm not saying that the Ki-44 shouldn't be developed for the game. What I am suggesting is that modders may not be off in their priorities if they want to fix the Spitfire, at least not in my opinion.
I am also suggesting that my opinion of what should or shouldnt be done doesnt matter, neither does yours. We aren't modders and since the modders are working for free to improve our game it is more than a little demanding to enter a thread and immediately start commenting that there are other things that should be done than what the modder chooses to work on.

How about help them rather than criticise them?