When I received the double SC offer (I was one of the lucky ones) I did some research on various JASA routes and, of course, this thread proved extremely useful.
I wanted to use points only rather than points + $. I also wanted to reduce my usage of Points per SC earned as much as possible.
At the end of my research I realised, coincidentally, that I had worked out what I thought was the best usage for each capital city.
There are no surprises here as all are listed in this thread but I thought I'd list a summary of the best routes - the Points/SC usage is based on single SC, not double.
These were the best I could find at the time. These are the base points cost but you can net off the Status and Cabin gains too.
Adelaide
ADL-xBNE-TSV = 120 SC for 37482 points or
312 points/SC (day return not possible in this direction but TSV-xBNE-ADL outbound is possible)
ADL-xSYD-CBR = 100SC for 35735 points or 357 points/SC (day return possible) (Thx - ferni)
Brisbane
BNE-MEL-PER-KTA = 200 SC for 54775 pts or
274 points/SC
(very limited days availability - Markis10)
BNE-ADL-PER-KTA = 200 SC for 58018 pts or
290 points/SC
Canberra
CBR-xSYD-HBA = 100 SC for 29868 points or
299 points/SC (day return not possible but can return via HBA-xMEL-CBR)
CBR-xSYD-xPER-KTA = 180 SC for 57973 points or 322 points/SC (overnight in KTA required)
Darwin
DRW-xBNE-TSV = 140 SC for 38463 points or
275 points/SC (day return not possible in this direction but TSV-xBNE-DRW outbound is possible)
Hobart
HBA-xSYD-CBR = 100 SC for 29868 points or
299 points/SC (day return possible)
HBA-xMEL-xPER-KTA = 180 SC for 56315 points or 313 points/SC (red-eye back possible)
HBA-xSYD-xBNE-TSV = 160 SC for 56315 points or 347 points/SC (return - overnight required)
Melbourne
MEL-xSYD-ASP = 120 SC for 37811 points or
315 points/SC (day return possible) (Thx - Awesom Andy)
MEL-xPER-KTA = 140 SC for 51637 points or 369 points/SC (day return possible)
MEL-xPER-BME = 140 SC for 52028 points or 372 points/SC (return - overnight required)
MEL-xPER-ZNE = 140 SC for 52806 points or 377 points/SC (day return possible)
Perth
PER-xSYD-CNS = 160 SC for 53577 points or
335 points/SC (day return not possible but can return via CNS-xBNE-PER)
Sydney
SYD-xBNE-TSV = 100 SC for 36746 points or
367 points/SC (day return possible)
SYD-xPER-KTA = 140 SC for 51642 points or 369 points/SC (red-eye back possible)
SYD-xBNE-ISA = 100 SC for 39459 points or
395 points/SC (day return possible)
** See
http://www.australianfrequentflyer....us-run-options-quick-35258-53.html#post742088 for
gizzard's updated list **