We do not plan Poland even as NATO part because it requires to make skins nd weapons for infantry - and we already have Czech nd Hungarian infantry from Eastern Europa and German, British and French troops from the West. Each additional nation reqires not only its own skins and weapon, but also voice - polish troops must spek Polish. And these additional audio files reduce amount of free RAM. We can, for example, use 50 Mb RAM to include in MP Polish infantry squad with polish voices - or use the same 50 Mb to include 2-3 German infantry squads nd an additional vehicle: more germans will not require more RAM for voices because they share voice files with other german troops already existing in MP.
So, except 3 western Europe nations we plan to include several Czech squads and vehicles only, and anyway, we don't have free slots to inclide something else.