Hey, thanks for this awesome compatibility pack, Swiss Halberdier!
I noticed that you've got adrian74's Morocco Unit Booster mod supported, but not his Indian and Barbary/Ottoman mods. I just started messing around with the .loc files and I appended his unitboosterind and unitboosterbarotto data to the newest UPC release. Fixin' to start up the game to see if it actually works but I'm so eager that I'm going to post before I do that.
I'm attaching adrian74's Indian and Barbary/Ottoman data in a TSV file, if you would like to add it yourself to UPC. (I cut out the information for both from the loc file included with his Barbary/Ottoman unit booster. Looked like he had the lines for all three unitboosters of his in there, and I'm assuming they're all up-to-date)