Soon after Mercedes released the C63 in Australia, to remain competitive price wise, BMW made most features that were standard in the early releases optional. By doing this, BMW was able to drop the price. Things like M drive etc became optional, and that included TV function too. I have a 2007 car, one of the first lot to arrive here, and the only option I could add were, the extended leather, 19" wheels, individual sound system, climate windscreen, and rear blinds. Everything else was standard.
But in the UK market most items are optional and that includes TV function too, hence the reason you don't have it. Even if you had it, you wouldn't have an issue in Australia because it's a DAB tuner, and any issues could have been solved with software update or swapping a couple of wires.
Bluetooth audio streaming became available with CIC and '09 onwards.
What I would suggest is that you do a CIC retrofit through Bimmer-Tech or BPM Sport and all your concerns and wants and needs will be resolved. It will set you back around $3500 and you will get a lot of features.
Good luck with the car.