Multi-lingual RunUO, in my opinion, would probably cause more trouble than it solves.. how, you might ask.. well, like Anhkesentapemkah said, it would start to encourage people to use their native tongue instead of English on the forums, and i'm not being racist, but the problem that this would cause is that people who don't speak english and don't even try to speak english will be trying to install and run scripts, and not knowing english will be posting non-stop asking for support. Even if you make a German, Japanese, Russian, etc. release of the RunUO system that has the base scripts in their language, they wouldn't be able to install any of the scripts on the forums and will be asking the script makers to translate it into their language, when the writers themselves may be limited lingually.
i'm not racist or anything, and I may not understand what you're trying to do fully, but from what I have gathered this is one of the problems adding new languages to the forums would create, and while i'm not against it, i'm just saying it would probably get pretty annoying