Just a hunch but I fear that this route will not return. I doubt very much that the Aussies will have the level of population vaccination that their conservative approach requires before the end of 2021. I don’t see the borders opening until early 2022. By that point, I suspect BA will drag their feet on reinstating the route because of depressed demand. The yield and level of equipment it absorbs have both long cast doubt on the route’s viability. With the option of code sharing with QR, I suspect the temptation to do simply nothing and hope people forget all about good old 15/16 will be too great.