Language Patching?

Of course you can, but Acrylic asked about a language pack, which means a full translation from one language to another. You could, if you wanted to, switch the string to be ASCII instead of unicode and then work within the limitation of bytes that you have, but that would be a large limitation. It would be much better to have no such limitation, but that would require a repacker. The reason why I said that it was "not possible with our current knowledge" was because there were still unknown bytes in the WZ files at the time of writing. Not knowing these bytes made a repacker impossible. Now that these bytes are known (at least by me), this is no longer an issue and a full language pack can be created without character limitations.

The image that Acrylic posted in reference to this topic did not use a repacker. He worked within the limitation of the unicode bytes given to him.