I think Tony Abbot made a comment a few weeks ago that the Australian section that does defence procurement is considerably larger than the British counterpart, despite the Bristish military being quite larger.
In some ways just going for it may be better than to spend years and years slowly deliberately working out which item is more suitable than another. Examples that come to mind are new trucks for hte army and the Caribou replacement.
Yes, a nice simple carrier in the 1980s would have been useful, even if it all it did was operate a dozen helicopters, water under the bridge of course now. Idea that something that is reasonably ok, is better than having a great item which is so expensive it gets put off for a decade or 2, and in the interim there is nothing.
Off topic, I notice that in the geo strategic defence section there does not seem to be anything about Afghanistan, especially given Monday's 4 Corners program.