I have been thinking about a concept for a sub mod that deals with recruitment of units. Something that has kind of bothered me about TW games is that you can recruit your nations infantry anywhere no matter how improbable it would be in real life. So my though was to limit recruitment and create areas of recruitment of other units, some what a kin to what the TROM mod did.
Consider Prussia as an example. Prussian Line, with all the perk advantages should be only available in core regions Berlin and East Prussia. In the rest of Europe you can recruit a German line or Provincial Line that is good but not as overpowering, really forcing you to preserve those elite troops in your army, kind of line the Colonial Troops in North and South America. Also you can not recruit European troops at all in Africa and the middle east, even the Militia could be the Eastern version, which would help slow down bliziting through the area. So perhaps expand on the African line concept and middle eastern forces. I believe that there has already been some good work done here as in adding more diversity to the region.
In addition perhaps make some of the more unique troops available to everyone as long as you control the province they are know for, for example including POMs German troops AOR recruit mod so you can enjoy the diverse richness of the German states, add in say Highlanders, for Scotland and Hungarian troops and so on, allowing for a more diverse Imperial experience.
I think these concepts together add a new level of strategy, giving a player a chance at more elite troops, which would help players playing as say Poland or the Swedes who are limited in elite troops in game. Yet at the same time would force you to really consider battles in far ways places such as the middle east since recruiting new line infantry is a difficult process.
What do you all think. I am sure that alot of this is really do able if you know what your doing, which I don't