Phillip Island was originally designed as a Motorcycle Racing Facility with safety as its first goal, with runoff areas with no obstructions. It was designed with long, flowing, high speed corners through the natural elevation changes. It is not close to the major population of Melbourne, which keeps attendance numbers low. Adelaide have a road course already which brings in 200K spectators over three days. MotoGP are looking at those numbers as a motivation to swap tracks. If they build a truely world class, safe track from scratch, the change might be palitable. But losing the MotoGP Riders favorite track is a bitter pill to swallow.
