It is weird that such huge-old software do not have build-in function of support different language-packets. I can spend time on making translation on ukrainian/russian/belarussian for free. (my friends asked alot about this, because they do not know english). I think other guys from WM community can support such thing and make language-packets for their own languages
so, ye, you do not need to translate programm on all languages, just add ability to support creation and loading of own language packeges that community can produce by their own