It reminds me of some fun Perl modules that allowed Perl programs to be written in Latin (https://metacpan.org/dist/Lingua-Romana-Perligata/view/lib/L...) and Klingon (https://metacpan.org/pod/Lingua::tlhInganHol::yIghun). Those seemed to be more fun than practical.
Unirust could actually be a great teaching tool for students in places where English is not widely used. Very nice work!