Hi John,
Can you give an example of 1 of the datasets your trying to remap with ? That would help clarify. Are you a Statistician or Programmer or Both ?
Quick Notes: JSON-stat format and semantics seems to be easily transferable to JSON-LD (upon a quick inspection from my eyes) JSON-LD is already used on Data.gov and upcoming on Data.gov.uk and others.
Maybe working with Gregg Kellogg on a transform tool and processor between JSON-stat and JSON-LD ? https://json-ld.org/playground/ https://github.com/digitalbazaar/jsonld.js
Perhaps also http://w3c.github.io/csvw/primer/ is interesting or useful for you ?
Finally, OpenRefine 2.8 (download and check it out http://openrefine.org/) has new Wikidata / Metadata features, but we still have more work to do in other areas, here's just one https://github.com/OpenRefine/OpenRefine/issues/1269
-Thad