Translating Common, JSword and BibleDesktop is difficult as translations files are segregated by Java package. As such there has been little traction in translating Bible Desktop into other languages.
Translations should be co-located in a single location. The translator should not have to dig to find the files to translate. By having them co-located, the translator can quickly find what has and has not been translated.
Translations should be able to be edited in their native script. Java property files are in ASCII and are not conducive to editing.
Translators should be able to edit the files easily outside of Eclipse using a simple translation editor such as poedit.
The conversion of these files to Java property files should be automated.
Recommendation: Explore GNU's "Translation Project." Specifically, gettext "po" files.