What is this for? The examples given could be handled deterministically. Is this for situations where you don't know JSON schemas in advance? What situations are those?
As is, it's not good for much beyond looking cool. (Maybe implementing Postel's Law for a json API, but I think that's considered bad taste these days.)
If instead of transforming a single object it would output a table of src_field->dst_field, it could potentially be a useful first pass in some ETL development.
The lazy part of my brain screams “use this instead of dealing properly with nested objects!” In a production setting I’d be worried about consistency from the base to result layers if based on LLM transpositioning.
