It is all in the numbers
As you say baggersup - there will very likely be an offer by BA to former BASSA members who have left since 25 June._ This will increase the number of ex BASSA members who have accepted substantially the same offer.
The new General Secretary of Unite will be tempted by this growing group within the shrinking Heritage Cabin Crew._ The newly elected General Secretary may well see these as potential members of Unite._ But members in some other way that does not give power to the troublesome cults.
The cults could become more concerned with the lower ranks of cc if it was easy for Union members to anonymously switch funds between BASSA/cc89/PCCC groups._ This could be done if the individual cc paid his annual subscription directly to Unite - and ticked one of several boxes for the 5% subsidy to a group selected by this tick._ There would need to be one more box to tick - a charity for the member who hated and detested all existing groups._ Ie tick BASSA or cc’89 or PCCC or charity._ Each group would try with their words (on their web sites) and their deeds to behave in an attractive way to ordinary cabin crew members.
It is all in the numbers._ And numbers will be listened to.
(p.s. 5% is a guess - it could be 6% or 10%)