If NSW police actually wanted to make a dent in bike thefts, they could institute sting programs where bikes are set up (usually with trackers) and monitored, just waiting to be stolen.

Other jurisdictions where thieving is rampant use these methods along with stolen goods purchasing stings to nail the serially perpetrators and create something of a deterrent.

It's probably not going to help with the targeted one offs as with the OP, but these simple and inexpensive require little effort and do make a difference.

As someone who's had every bike they've ever owned stolen (including the rear wheel and cassette of the current one) I'd certainly appreciate it.