One nice feature you could add: a tool to call the Google Translate API on a concatenation of all translated strings back to English (or the default language). The idea is for the developer to verify the translator did not write insanities before validating the locale. I do that manually for translators i don’t know.
I don’t want to start a war here, but saying you don’t have to install node.js, only java, doesn’t make me more comfortable