Excuse a pilot for butting in here but JB has raised the point and I think it germane to point out a glaring difference in opinion about the value of remaining on a pre-reform EBA between the pilots union and the FAAA.
The difference as I understand it is that the only way to cancel a pre-reform EBA is when it is in the "public-interest". So to cancel the current F/A awards would have to be done in some way with demonstrated that. How Geoff Dixon could show that, provided the FAAA acts in a responsible manner and bargains in good faith, is difficult to surmise. I suggest it would be almost impossible.
If the company becomes privately owned, I would suggest that there would be zero chance of Dixon convincing a judge that cancelling long held and properly negotiated awards could be construed as being in the public interest.
In which case being on the current EBA, with an election looming, may be the safest course.