From a special events perspective:
[list=1]
- Ki-84 (good for MA and fills out mid and late war for SEA events)
- B-24 (good for MA and all theaters for SEA events)
- P-39 (good for SEA events early and mid war PAC and MED)
- HE111 (good for early war events EURO and MED for SEA events)
- G4M (good for SEA events)
You asked for 4 ideas and I gave 5 .. sue me, but those would head up mine list .. all good for SEA events and 2 decent for MA action.
Outside of the I would like to see the KI44, B25, PE2, Australian Boomerang, Beaufighter.