Just an observation, the AWD is a frigate that we have decided to call a destroyer. IMO had the US decided to build a frigate replacement for the FFG-7 class after the collapse of the NF-90 project, it would likely have looked a lot like the F-100, with the obvious advantage of being cheaper due to economy of scale. Why is this important? Well considering we currently have 4 FFGs in service, originally had 6 and 3 DDGs and at one point planned a total of 10 the argument that we need more AWDs holds more water. Add to this the ANZACs were originally intended to be high end GP/ASW frigates, then low end patrol frigate before the RAN was able to secure something in between. Leaving corvettes, OPVs, FACs and PBs out of it, you could actually argue, that based on historic force levels and capability comparisons that 3Flight II Burkes and 6 F-100s would be a reasonable starting point for the RAN today.
Add North Korea and Iran to the mix and you have to ask would PMs Hawke, Keating, or Howard have forked out extra funds to cover missile defense (more hulls), in fact would would either of the should have been PMs, Costello or Beasley have done?