To support agencies in mapping data to geospatial references, let's provide a central site which any agency can use to geospatially identify its data.
This could start by drawing on all local, state and federal government geospatial reference materials, building a single national service independent of any mapping solution.
This should include all electorates, postcodes, placenames and geographic features - but to preserve privacy not go to individual address level.
It can then be extended through crowdsourcing placenames, as the Victorian government has been doing at VICNAMES (http://services.land.vic.gov.au/vicnames/).
The outcome would be a central service that agencies, not-for-profits and commercial providers can use when matching data with geospatial references, enabling standardisation across emergency and other services.