The Polish pack now includes minor updates to the Star Wars subtitles, so if you want Polish subs, this is what you want to use for now.
The problem is/was that I don't have a very well-defined set of style guidelines for subtitle submissions, and some of them (maximum line length and maximum number of lines) are really important for good-looking graphical subtitles. I was able to correct the ones I had without knowing Polish (and Jedi doesn't have many long lines so I'm not concerned about it), but when I do push out the next version of the project, it will have a set of basic instructions for making subtitles, with style guidelines and better subtitle templates (instead of having to use the English full subs as templates, which can lead to a few other problems).