Just read a media release from Standards Australia, and it says that the revision of the standard that will encompass ISOFIX will also allow for children <3 to remain rearfacing.

ISOFIX can be, and is often (overseas), safely retrofitted to a vehicle. It doesn't have to be built into the car when it is manufactured.
That sounds promising, hopefully they can make some positive changes. And great to know isofix can be retrofitted.

Thanks so much for all the interesting replies, its made for a great read. I dont think I am comfortable with importing a seat and using it.... its verrrrry tempting and know I realistically it would probably be fine, I just dont think my conscience would let me hahaha. Hopefully by the time we do have #2 or when #2 is getting close to outgrowing our 12kilo RF seat some good changes have been made and more options are available.