I've only just thought about this, but it's possible TWI will add Romanians/Italians/Croats or suchlike at a later date. After all, the game is about Axis vs. Allies, not Germans vs. Soviets specifically (even though it obviously is, but I'm talking about names and symbols) so having other nations unique to certain maps (perhaps with a few new weapons) isn't altogether out of the question in the long term. It's just a case of new uniforms/skins and some voice work I suppose.