Touche, the Nepean Highway narrowly clips the danger area by the smallest of margins, its merely a good landmark to stay east of that assures being clear of the dropzone. If you were over the highway and you came anywhere remotely close to a canopy then they royaly screwed up, maybe there was a storm near by?
I'll meet you halfway and agree with you that flying around it is an extra cost because it is a cost, for sure, albeit a small one. Just please stop spuiking the safety cr@p to push your agenda. So many people on this forum bawl their eyes out from dealing with our usually oppressive, tyrant regulator. In the approving of this drop zone they have applied some open-mindedness. You have a voice and using the safety card when it isnt warranted really is a slap in the face to a lot of people.
If you want the dropzone removed argue that its placing an unfair and unnecessary cost burden on your operations. That at least has some merit. Good luck.