Not really. Most of them were rejected. And is still not HA.
Current Pacific maps are based on a 1943 campaign.
Depends on the tanks though.
The Semo was not even present in Tunisia and used only in Italy.
Sure…
We tried it with Ass-symmetrical balance since the stone age, and the result was unbalanced campaigns or a situation where the Japanese cant face the Soviets because they would nuke the shit out of them.