Exactly, Squawk.
The ATSB has used a bad example in its recent advert. VFR aircraft in a published flying training Delta.
One need only watch what goes on (and to have been in there doing it) to know why ATSB should be very circumspect in plugging ADS-B IN as a useful tool for collision avoidance for VFR aircraft in training areas. If all you have is a screen in the cockpit displaying the 'raw' ADS aircraft symbols and data, you'll go crazy staring at that display trying to keep track of where everyone is now and going next. And if you have all the traffic alerting 'bells and whistles', they'll send you crazy too. (I now leave my CO detector off before take off, for analogous reasons. Once in the air I'll soon see whether the CO level is unusual.)