I asked my brother and he said dll-files weren't so cool to work with. He isn't interested in this type of game and that's why he wouldn't give it a chance too. If it were text-files it would be ok for him but in this case I have to dissapoint you. He said the developpers will have to release a tool. As example: In Medieval Total War you could mod things too, but building castles wasn't that easy because it was harcoded or something said my brother, so devs had to realease a tool to make it able to mid things.