Hi;
The plugin provides support for using WP-CLI to import / export strings. That's designed to let you pick up a set of replacements, and move them to another site - or use them as a "starter-kit" for new sites.
It'll let you run those exports as CSV or JSON. I'm not sure what the value would be in having them available in other formats?
If you feel like changes are needed - it'd be helpful to try and understand the use-case.