How's about this for a possible WW "end-game" choice for striking crew?
A: Stay on current contract with no staff travel.
OR
B: Offer New Fleet contracts to them with staff travel perk re-instated and new date of joining.
This way strikers are punished for damaging the company whilst loyal staff are rewarded. BASSA is destroyed and WW achieves his objectives.
Certainly some striking crew will value staff-travel differently. But to lose it FOREVER is something they possibly haven't given enough consideration to.
Just a thought.