As it stands, I'd say the set of planes available for Special Events is at the very least useable, whereas the perked bomber set is not.
Uhm, let's see...
We can't do an appropriate Flying Tigers setup because we don't have ANY early-war IJAAF fighters or bombers.
We have late-war Ki-67s substituting for early-war G4Ms during many setups.
EVERY early and mid-war PTO scenario outside the carrier battles are INCREDIBLY difficult to setup because, once again, we don't have some VERY important parts of the Japanese plane set of the early and mid-war period. So Dutch East Indies, Philippines, CBI, and Solomons are either VERY limited if not outright impossible until we get into the end of 1943 and into 1944. We had
BF-110s substituting for Ki-45s during one recent Philippines setup in FSO.
Japanese are left with D3As and B5Ns as their primary naval attack craft in very late-war scenarios, without even the option of the more capable Jill and Judy.
We have a later Ju-88 variant substituting for He-111s in BoB setups. This also makes other early-war European scenarios such as the Battle of France difficult or outright impossible.