I don't have the understanding of why departments are doing what they do, heck part of your post I just skipped past because it seems you know what you're on about. I can't dispute any of your statements. It looks like I am just another gullible person assuming the government is doing the right thing!
You didn't however answer my question on why you would need more than the current limit. I'm not green, i've been out a couple of times and come close to our 20pp limit. Thats a load of fillets, and something I would only ever do once a year. It filled the freezer well past our next reef trip...