here's the snap map - yellow box seems to be the old 3.0 theater coverage.. red box covers whole japanese Hokkido island.

Q1 - though we have many unfinished theater mods, does it harm to
have one more mod in this area, to bring back the old falcon3.0 day memory?
Q2 - due to falcon4 campaign engine limit, hard to have any naval fighting. so the main ground war got to be happen..in russian kurile island or Japanese Hokkido island? russian invasion sounds more reasonable - yet fictional.
lastly, no serious. this thread just a discussion about the possibility.
