This would be a lot of work. It would not solve the problem fully (e.g. we couldn't generate those PNG files), and the intermediate step of exporting XML files and such untranslated wouldn't be all that helpful.
For this use case, it should definitely be done outside Launchpad. Where we find a real need to do something like this inside Launchpad, it'd be a blueprint rather than a bug.
This would be a lot of work. It would not solve the problem fully (e.g. we couldn't generate those PNG files), and the intermediate step of exporting XML files and such untranslated wouldn't be all that helpful.
For this use case, it should definitely be done outside Launchpad. Where we find a real need to do something like this inside Launchpad, it'd be a blueprint rather than a bug.