Mmmm…… so Various advanced F-14s instead of the F/A-18E/F/G Block I, II, and III.
First whiff, replace the RAAF F and G buys and the recently announced German one, they would also be a better fit with the F-35B/C as well as an interesting option for the USAF and USMC.
As for earlier RAAF adoption, how about the RAAF adopts the A-5 Vigilante instead of the F-111 and needs a late 80s, early 90s replacement?
Extrapolating the Vigilante, lets say the RAAF goes through with the initially planned F-104C buy that was canned and replaced with a final batch of Sabres. The early introduction of the F-104 / J-79, makes the Vigilante more attractive and the replacement of the remaining Sabres less critical. With the F-104 and Vigilante in service, the J-79 powered F-4E becomes the obvious choice to replace the ground attack assigned Sabres during the 70s and then the F-14D become the obvious choice to replace the F-104 and Vigilante in the 80s and 90s. The late build F-4Es are then replaced with enhanced F-14 derivatives in the 2000s, while the early F-14Ds give way to the F-35 in the 2010s and 2020s.