I agree. After 10 GP rounds it gets increasingly unlikely they'll be anything left to play for when it gets to GP 11. They'd do well to put it in late February. It could be like the Daytona 500 of the SGP - a big event that actually occurs very early in the season.
Having said that, I suppose the local audience will view it as a self-contained event: The Australian Grand Prix. Featuring the best riders in the World. As a footnote, it also happens to be the final round of the Speedway Grand Prix.