FourFourTwo AU put together a useful guide to the club's results in offseason. These results should probably be taken with a grain of salt; obviously clubs were still making signings, players were still coming back from injury, and managers were giving some youngsters experience - so it's unlikely that clubs consistently sent out their strongest available line-up, or even played in their preferred style.
Nevertheless, there's still utility in seeing how many games clubs lost, how many goals were conceded, and who has scoring form going into the regular season. It should be noted how notoriously unrealiable pre-season results are as predicators of regular season success; in the 4 seasons in which the A-League held a Pre-Season Cup, only one of the Cup winners went on to become Premiers or Champions. Quick summary below.