It will be interesting to see what developes as the year progresses. It is my belief they will want to keep the option of basings open but quietly let some(Australia, in particular) naturally reduce in numbers. At least until the long service leave and other headache issues are sorted out in Australia.
And, of course, they will still be able to tell people at interviews that the basings option does exist. A bit like the 2 years as S/o and 10 years to command spiel being put forward recently.
For those wanting an Australian base in the future, you may have a very long wait.