Hi Robbie,
Interestingly, I remember you asking similar questions 4 years ago :-)
http://yssyforum.net/board/showthread.php?t=9861
You raise some valid points, and that's probably why nothing has changed or developed since then unfortunately.
AFP's community based Airport Watch concept still exists and more information can be found here:
https://www.afp.gov.au/what-we-do/ou.../airport-watch
"See it, hear it, report it - 131 AFP"