Maggiefly
I believe BASSA are indeed soon balloting for strike action. However...
It has nothing whatsoever to do with Open Skies! They have other issues to deal with, and in my humble opinion, are only just cottoning on to how OS may affect them!
There is absolutely NO recruitment ban for cabin crew, which of course there is for pilots. (Making anyone applying as a pilot, a 'scab') Neither do BASSA have any agreements to prevent recruitment into OL.
I don't quite know if they would be able to 'raise an army' over this issue, should they decide it's worth fighting! Reading between the lines, and making some big assumptions, I imagine you're pretty safe.
Perhaps you could ask this on the cabin crew forum?
Hope you have a better work pattern (and T&Cs) than the pilots!
411A This user is on your Ignore List
And relax...