Ok, in my opinion the stuff seized was crystal meth, it's commonly getting called ice because basically somewhere along the line the names got mixed up. If it was 4-MTA I don't think they'd be saying it was crystal meth, which is what the cops have been saying, I challenge anyone to find evidence of 4-MTA ever being seized.
Why are they importing it? because basically the pre-cursors (pseudo-ephedrine, red phosphorous etc) is much easier to obtain in SE Asia, and as well as that, they already have well organised mass-producing labs pumping out amounts like what was seized. Meth is a major problem in SE Asia, because there is so much of it and it is so cheap, another reason for importing to Australia.
80kgs shows the growing demand for the drug, and the capabilities of SE Asia to supply that kind of volume. What does it all mean for us? reduced cost, and more freely available. Give it another couple of years and we'll be like the USA and Asia, where if it isn't rock meth, it's basically worthless (i.e. street grade wizz will be treated with disdain!). Here's hoping! hehehe