No, I don't think so. You can experiment with xml files like Civ4HandicapInfo, Civ4GoodyInfo, Civ4ImprovementInfo. The problem is that I forgot to throw in the updated DLL Source files in the last 2 versions, so you can't edit those (I don't think at least); and on top of that my cat stepped on my keyboard in just the right (or terribly wrong way) creating some kind of indiscernible bug, so that I do not have a functional DLL source. I have to backtrack and do a bunch of copying and pasting that I can't find the mental energy to do. No, I still do not know how to use Git in the way that I should.