Keraunos said:
You could be interested in small MP mod I did

Unfortunately now it's in polish, but I'll soon post it in this forum, too.
What do you want to mod?
We have completely removed anything from the game that we wont use.
Example: It is not allowed to release countries in our MP games, so we have removed all files with regards to countries that will never exist. Minister, leaders, techteams, revolter entries, colonial_release events, AI_events in short everything. All AI_events for the mayors that will be human controlled are also deleted.
For all the countries that will be military controlled by human players i have completely killed its garrison, front, invasion, navy AI. Set some admiral parameters to stop the AI to split up navalgroups on reload. Mayor hasle when playing UK and military controlling 4 - 5 different minors navy's. We have killed the AI's possibility to strat redeploy to avoid having the AI messing up units during reload after crashes or when fixing losttechs and such. Set the withdrawelodds = 0.6 to 0.2 to stop military controlled countries AI retreat before human controller want to retreat.
For countries like finland and other latecomers into alliances we have made switch events that set them up to be military controlled.
We reworked the Interceptor & Multi_role fighter setup. So the two early type are fighters instead of interceptors, moved the rocket interceptors so we dont have to upgrade through them from advanced interceptor to turbojet intercepter. Added a practical rocket engine tech and added some req. techs to that techs so countries would have to invest a bit more research to get rocket interceptors. Had to change some config & inc files so they matched this new setup. We are using the Interceptor stats from HOI2 so interceptors will have it difficult against fighters but increased the bonus against bombers, so both units has a more unike role. Decreased airunits capability to slaughter ground units and navies.
Removed insane numbers of redundant stuff from AI files to keep savegame as small as possible. Tweaked a lott of unimportant american minors build settings so they wont build so many units they never get to use anyways. What do Haiti need 10 lvl 1 DD and 5 TP for
I have added several minister AI's to countries missing them. Improved or adapted the rest to MP game. tweaked some countries build prios for balance reasons. Changed Belgium and Hollands garrison AI so they dont send 40 % of their forces to africa and indonesia.
Not much we havent altered. The game is offcourse completely unplayable in singleplayer and requires the players to completely delete most of the folders in their doomsday folder before installing the mod. It runs sofar very smothly and with increased speed because of the lowered cpu & memory requirements, when i have tested it in singleplayer. Need to do some MP testing before the game to be sure its stable.