Will the family GP be a thing of the past, asks Ian H. McDougall.Some political campaigns roll around as regularly as hot weather in summer. The Australia Card, or national identity card, surfaces under every federal government, be it Labor or Liberal, and is eventually abandoned due to public pressure.But one policy particularly beloved of Labor administrations is a salaried medical profession. It has just surfaced again, under the guise of regional medical centres.Why is this policy so persist…