Well, if you want to start on it, do you know how create new entries in the language xmls that are inside an rco? And do you know how to create new ones for all the entries in this mod? 
Also you would need to know how to add all languages to param.sfos, as some titles are in those. this is possible too. webman updater does it.
Also you would need to know how to add all languages to param.sfos, as some titles are in those. this is possible too. webman updater does it.