The current ( and very persistent) rumour regarding perth is that the LongHaul base there will close, and all crew become shorthaul .... this kinda makes sense as the shorthaul crew can now do all of the flying that the Longhaul Crew do in Perth (they have new duty hour limitations within their award).
So it may only be a shorthaul option for perth. I have heard again more MAM casuals are happening for all bases.