can I ask why? What can you use the pink ID card for at immi that the passport can't? Nothing I presume - except you don't have to bring your passport and the pink ID card is obviously always on you.
A lot of people say that but that is not true - whether you have to go in person or not the 1st time depends on your immi! I did my 1st online and that was accepted! I tried because someone in this group said his 1st application was approved and he did it online. I would say try online first - it might save you a trip and the worst that can happen is that it's rejected and you have to go.