>What is the use case you have in mind

Literally any time/where I would use a translate app that speaks the target language???? Personally, like you, I don't care if it sounds like my voice, but is it really hard to imagine someone who might?

Are you "pretending" to speak other languages when you communicate across any translation layer? Could help one learn what their voice might sound like in a language or maybe on discord there's a layer so we can all hop in to any language discord, speak, and everyone hears us in their native language. No more robotic translator voice or whatever friction exists as is.