We just got our first look into what JSS has got to offer us when it is introduced in January. It has pretty much resulted in the worse possible roster I could possibly imagine being a SH commuter. Being in the top third of the SH bidding group (over 75% behind me) I bid for tours as long as possible. No other criteria, not bothered about weekends, lates or earlies. Got given a roster by JSS consisting of only 2 day trips, all the other longer tours have as reason i didn't get allocated it "Given to more senior crew member".
Just a warning of what to expect of the new bidding system.