Existing Bidline was largely rendered extinct by the advent of EASA, mainly the requirement for a certain number of days off after a Longhaul trip crossing four or more timezones.
We were being asked to choose between "Bidline 17" or a BA version of Jeppesen Strict Seniority, both of which it was argued were more useable with EASA. The controversy comes when you realise that neither system exists yet and we were basically being asked to vote based upon a series of statements about each. Oh yes, and the percentage pay deal side of it was identical for both options, with some sweeteners for the preferred deal. So not really a pay ballot.
Anyway, we are where we are so we'll see if JSS actually works.
Ref FPA or Flying Pay, FPA is guaranteed monthly, Flying Pay is hours dependent. It will be interesting to see how mortgage providers interpret it for the most junior.