Hm, that's strange...
North Korea is available on both, red and blue sides in stationary aircraft, only blue US is missing. Gonna mess around with it a bit myself till evening (BTW, Marry Christmas, we've got Christmas Eve today!).
It would be nice to have an alternative to Forgotten Countries Full in JGSME, e.g. Forgotten Countries Cold War - which would include all countries from NATO/UN on blue and Warsaw Pact on red + some more important countries from that time, like Argentina, Brasil, Mexico, Egypt, Israel, on both sides (of course including only countries with actual air force in all of those groups).
BTW, there should be also red sided Luftwaffe (WW2 one) for FC full - for German-deserters and early war (III Reich - USSR alliance until Operation Barbarossa) scenarios...
Generally, as you say, it should be DIY mod - everything should be customisable via ini files, so everyone can make own version suitable for his campaign, and include it in campaign download as JGSME mod, so everyone can install it and enable when playing that campaign and then disable without touching original FC files.
Gonna ask CirX for it. Thanks anyways!
Marry Christmas