This is a completely hypothetical plane set right?
I ask because if there was an associated history quiz, this scenario would garner an F.
Not that it will make any difference, but there were no Zeros (especially 1944 vintage A6M5s), or Wildcats or P-40Es in Burma in that time window.
Likewise, the SBD is a sorry replacement for the Brewster, being about 40 mph slower with a terrible climb rate to boot.
The Allies had some Hurricanes and a small amount of Spitfires, Brewsters and the AVG Tomahawks. The Japanese had a small number of Ki-43s (64th Sentai) supplementing their Ki-27 Nates.
I strongly suggest that the CMs and designer read Dan Ford's short history of the Rangoon campaign here:
http://www.warbirdforum.com/rangoon1.htm. I've know Dan for about 12 years. He's an excellent historian and writer.
Ki-27s were only marginally faster than the D3a and nearly equally armed (didn't have a rear firing gun, but both had twin 7.7mm MGs up front). I could live with A6M2s standing in for Ki-43s, but A6M5s are way over the top. Plus, the D3a will have the advantage of external views. Inasmuch as no F4F-3s fought in Burma, I see no need for the FM-2. You could substitute the four gun F4F-4 for the Buffalo, providing balance for the A6M2s.
In Burma, the Allies generally had the better fighters. However, the Japanese had a much large force available.
If this is a historical scenario, having a plane set comes as close to reality as is feasible would be good, don't you think? 65% Japanese, 35% Allies. This should be balanced... Quantity offers its own quality, as Stalin stated.
My regards,
Widewing