There won't be a sequel.
Soundings are that relations between BASSA and BA management are getting much better. Some may not have adjusted to the shift in the balance of power (which is already yielding benefits to passengers) and there are pockets of hostility to Mixed Fleet but there will always be a minority wanting to cause trouble (caused by a structural dependency on the company for career long earnings, not management) and the ability to point a gun at the company's head has gone forever.
Crew do also speak highly of Frank van Der Post and Keith "good cop" Williams.
The industrial dispute fundamentally broke the historical template of unions being able to point a gun at the company's head and it capitulating at the last minute with promises to all get along on the future. Any union rep that didn't heed the hard lessons from the dispute would be doing their members a grave disservice.