Refining my proposal a bit.
1.NATO TROOPS. USA W. GERMANY FRANCE
2.Warsaw pact. Communist Poland, USSR, DDR.
3.ASIAN Pro east... Vietnam, Peoples' Republic of China, Laos
4.Asian Pro western Japan, S. Korea, Thailand.
5.Africa, Nigeria, Ethiopia, Congo or Egypt.
6.S. E. Asia, Indonesia, Malaysia, Singapore.
7. Non Aligned Movement, India, Yugoslavia, Cuba.
Each one of those 7 packs will start as this. "Early in the beginning of the conflict the aliens raided xenonauts and killed them all. UN decided to restart them using "Communist Poland's" personel and scientists.". From then on the game would proceed regularly, only with polish soldiers as personel, polish designs for everything, aka planes transport planes, tanks, personal armor the works, including initial weapons that ought to be faction specific. Same for all the other factions and other packs. The artists of goldhawk would go absolutely wild designing those.