With XAI, Gigantus' version, and many modders getting into the swing of things themselves today that it might be fun to talk about what you've done to your own PDER campaigns.
So far, the biggest mod that I've done is the total conversion of Portugal into a Serbian Faction. With limited experience in modding, this took quite a bit of work to finally do. So far its been worth it to watch them duke it out with Sicily, Venice, Hungary and Byzantium no matter what campaign I play. I've also "created" some new units by using the skins of existing units... I seem to have a lot of trouble incorporating new skins or skins from other mods in the past and cannot seem to figure out what I am doing wrong .
What changes have you made to the game yourself?