I’ve started a Mount and Blade Birthright module myself. Haven’t worked on it for quite some time because of lack of time. If I recall correctly, I have troop trees for all human “Five Tribes” with native and community-made equipment, a barely acceptable map made with Thorgrim’s Map Editor, semi-decent heraldry for all lords, all Anuirean towns, castles and villages placed and most of the Anuirean lords complete with their names, equipment and appearances. Other faction settlements and lords are also there but I haven’t placed the settlements on correct places on the map nor assigned them to their lords. I’ve also made a script for unique regional troops. It currently works only so that Imperial Chamberlain, the leader of Anuirean Empire faction, can hire some Imperial Legionnaires and Knight of Iron Throne while hiring troops in the city of Anuire. I was planning to use the same code for special troops like Iron Guard of Ghoere, Guardians of Mhoried and the various Brecht troops.
I’ll probably resume work at the end of the year. My original plan was to make a simple modification of native with altered factions, settlements, map, troop trees and community-made equipment and release it as the first beta. Afterwards, I’d make the module more and more unique in smaller increments. My final goal would be to implement all the specifics of Birthright settings: bloodlines, Awnsheghlien, non-humans, spells, unique settlements system (not bound to the M&B town/castle/village categorization), regency, etc.
So, if you (or anyone else for that matter) are interested, I’m quite willing to join forces in order to have the module completed before M&B becomes obsolete. It kind of already is with Warband and With Fire and Sword, but I prefer the original M&B because I like its animations better and because it has fewer base scripts to start working with.
btw, speaking of mods and games, I’ve also started a map of Anuire for CK but it’s highly unlikely I’ll finish it before CK2 is released, if ever. I’d like to see a mod for EU3 or CK2 as much as one for M&B, so if anyone is interested in making something like that, count me in.