Hi Tanelorn.
Here's my wish list. It's too long to make all the units, I'm sure, but still far from comprehensive.
These units are done, and should not require more work: KI-27 Nate, Ki-43 Oscar, AGM2 Zero, Ki-45 Nick, Ki-61 Tony.
These units are done, but may need some tweaking: D3A Val, B59 Kate, Ki-21 Sally, G4M Betty, Ki-49 Helen.
This is a list of suggestions. A=Army N=Navy F=Fighter B=Bomber C=Carrier. Year is when it first flew; in most cases it would have entered service one year later. Here's the wikipedia article I referenced:
http://en.wikipedia.org/wiki/List_of_aircraft_of_Japan_during_World_War_II
(fighters): Ki-43 Claude (N-CF '37), Ki-44 Tojo (A-F '41), Ki-46 Dinah (A-F '41), J2M Jack (N-F '42), N1K2 -J George (N-F '43), Ki-84 Frank (A-F '43).
(bombers):, G3M Nell (N-B '35), Ki-51 Sonia (A-B '39), Ki-48 Lily (A-B '40), D4Y Judy (N-CB '42), Ki-61 Peggy (N-B '42), P1Y1 Frances (N-B '43).
Please let me know if I can help in any way.