Litebulbs
Oops I see what you mean.
In the long term legacy crew are a dying breed. This may take many years but the writing is on the wall for the fleet (not individuals), natural wastage will see to this. As MF grows and legacy crew numbers decline, they will be forced onto a more and more limited number of routes. So as the legacy crew do decline, albeit slowly, BASSA will become less and less relevant UNLESS they can in some way arrange to become the negotiating body for MF. So, at the moment, the two are the same - or could, for the immediate future, be used as a shorthand for the same thing.
If legacy fleet dies so does BASSA. I think the only way BASSA will get these negotiating rights will be by forced recognition, by getting the numbers in MF to the required percentage, and I cannot see BA being at all helpful here. For MF they would probably give voluntary recognition to the PCCC if for no other reason than to run interference. BASSA has to change or it will ultimately be sidelined and die. BA will be doing all they can to achieve this.