NWS integration: Support for CWOP/MADIS Station codes?

NWS integration. I see that documentation allows me to select one of the
METAR station codes from: CNRFC - METAR Observation Station Identifiers

I’m wondering if anyone has been able to add a MADIS/CWOP Station? or could this be added in the future?
For example here is my station that reports to NWS: Weather Conditions At GW3592