As Over+Out states you will get your route on first contact with a LACC frequency. Couldn't we come up with a system that on first call the crew tell ATC which STAR they are flying and then we only amend it as and when required. eg. London BAW292 FL370 on a BNN2A. I accept that there will inevitably be headings required but at least we know that if you Radio fail you will follow the STAR that we expect. We would also be required to amend it if any en-route holding was required