Please, although I know CF will, don't assume that granting tomorrow's injunction means anything significant in this dispute. It's simply a temporary stoppage on BA's changes until a full court hearing - if it's granted. So a BASSA "win" tomorrow is little of the sort other than a judge deciding it warrants deeper investigation in the courts. If BASSA "win" that one then it's more significant but, even then, all BA have to do then, as far as I'm aware, is give notice of change to contracts over a 90 day period and these changes can come in anyway.
The long and the short of it is that you'll need to negotiate or strike to avoid them - it's most unlikely a court will tell BA they can't change.
MrB