Gentlefolks
A simple solution. Resubmit this argument to the year 2020 when the USA has ADS-B and the situation changes from the current Oz naysay context to the best thing since sliced bread - and Dick and that wiley MJBow - will be telling all we should have ADS-B to solve all these problems - coz it's then part of the almighty USA NAS.
ADS-B IN would likely have solved the heavy and the lighty proximity at LT, and many of the other location issues noted here. The WA trial will probably prove the value of ADS-B OUT for 'roll out' surveillance and a/c to a/c alerts - too late.