The Alliance part worked quite well, the issues have been with the contractors that are not part of the Alliance. The designer for instance should have been part of the Alliance and all major structural work should have been carried out by Alliance members, not contractors with no vested interest.
When I was on the project it was generally known that the newly trained workforce at ASC was doing a higher standard of work on more complex blocks than BAE where because, unfortunately, BAE had lost most of their experienced workers in the valley of death before the new contract. As they were an experienced shipbuilder they were not subject to the same level of oversight as ASC and as such were able to stuff up things beyond recognition before it was realised there was a problem. As an experienced shipbuilder they were responsible for their own quality and stuffed it. As a new shipbuilder ASC got alot of help from Lloyds, Bath Iron Works and others and got it right. In hindsight the project would have been better off building the keel blocks in Adelaide under the same regime as they successfully built the complex superstructure blocks including the foundations for the SPY-1 radars. BAE on resent experience would not have been able to do this work successfully.
Now that said had the government, upon cancelling the corvette program in 1996, decided, instead of upgrading the FFGs and attempting to upgrade the ANZACs (ANZACWIP), to build a replacement for the DDGs, Williamstown would have been the place to go. As a direct follow on from the ANZACs I have no doubt that Tenix could have built three or four F-100, Flight IIA Burkes, Hamburgs, or Darings on or below cost and ahead of schedule. They were on a roll having successfully completed two FFGs and ten ANZACs in just over a decade, they were a world standard shipbuilder. Instead they were starved of work, their workforce made redundant and the capability wasted.
ADI / Thales is not a major shipbuilder, they are a maintainer and modifier of ships others built. You may have been thinking of Cockatoo Island which was the major shipyard in Sydney that was closed in the 80s. A shame really as it could have been everything and more than Tenix, ASC, BAE but was like so much else killed by politics and lack of work.