What I'd like to see, most likely in an expansion, is some sort of continuing training. I realize the political choice determines most of this, but the resources dedicated to training varied tremendously by country which played a big role in those countries not at war in 1939.
Simple method would be that each unit in countries not at war would receive a certain experience bump each month. This could depend on doctrines, current officer ratio, practicals, etc.
I'd like to see a more complicated version where players could choose a training 'production' representing live ammo, fuel and commitment to training (in denser populated countries, exercises destroy a lot of farm land). I think this could be done by having every EXISTING unit at the start of production get a certain bonus when the 'production' is complete. I don't expect this to be IC heavy, maybe similar to production of a provice fort, but this would simulate those countries' commitment to training (e.g. live fire torpedo exercises, realistic bombing, tank heavy exercises).
Just a thought...
