Did anyone here play the 1914 mod for Hearts of Iron 2?
http://1914mod.wordpress.com/about/
I really enjoyed this mod as it turned HOI2 into a WW1 period game; i love the time period
Just mentioning it because
A: similar content to this mod
b: There's a lot of content here which would be of use to this mod
Much of the tech tree, generals, flags, events,units in the 1914 mod would be applicable to this mod.
I'm not saying 'go out and copy 1914 mod', but rather that as a reference source it could be extremely useful. Hours of research from the mod community went into that game. Those resources are as far as I am aware publicly available.
It may save many hours of research and help answer some questions to use some of the information there. From memory they had leader trees for countries such as Holland, Italy, Sweden i.e. not just the 'main' WW1 countries.