I have a stack of books about the IJN, and the Zero is a favourite aircraft, but I'll wait to see what the Blackbird one is like. The WW2 Japanese aircraft I'd really love in MSFS are the Kawanishi H6K 'Mavis' flying boat for long trans-Pacific hauls, and the Japanese army's Nakajima Ki-84 Hayate 'Frank'. The latter was the best fighter produced in any numbers by the Japanese, and more than a match for the P-51 or Hellcat at medium and low altitude. Unfortunately for them, it was let down by weak undercarriage, a lack of spare parts, poor quality fuel, and inadequately trained maintenance personnel. Otherwise, it would have run rampant over the Philippines. Perhaps Flying Iron will turn their attention to Japan after the B-17G is done.