Agreed...
Yes, Galaxy...totally agree. The GPS needs to be turned off. I operated out of Shanghai-Pudong with the 777. The airport is not WGS84 compliant. If we used the GPSs on departure, when we selected the TOGA buttons for takeoff, we would receive a master caution and the FMC Runway Disagree EICAS message would appear. There was also a very large map-shift. Disabling the GPS and letting the inertial look after the system kept this message from coming back and there was never any more map shift errors.
The majority of the approach from the east was on vectors anyways and there was never any non-precision approaches in there that we required our GPS to be operational.