I realize this thread is somewhat old, but what the heck.

So, i've implemented all the changes to the files listed in post #1. I have the feeling that i did right, basically. Now i have run into a funny problem. After adding shadow factions to the romans, i have taken the total number of factions listed in the file 'desc_sm_factions.txt' to 25. After 21 the engine seems to stop reading the stuff. #22 is now Scythia and during runtime the debugger patiently explains to me that the first unit listed in 'export_descr_unit.txt' that is owned by Scythia has an 'invalid ownership'. :P

Now i have read about the hardcoded limits of the vanilla game. I was simply wondering if that is so, why do the instructions in post #1 not mention this? Or is this a solution that would work under a differently patched version of the game (not BI). I am currently playing and modding RTW-gold, which i assume is using patch 1.5.

Any help or helpful comment on this would be very much appreciated.

Sûl.