When the captain bids started being unfilled, they started moving the vacancies to where pilots actuallly want to be based. That will never, ever, ever, ever happen again. Humongous concession, the effect of which we will never even really be able to measure. Everyone has gotten "retro fever" and is turning blind eyes to huge red flags. You think this wont effect you because you are already in the seat/base you want to be in but it will undoubtedly stunt the growth below you.
Its also selling short the future pilots in a huge way, pilots who are forced to upgrade will inevitably be forced into bases they dont want to be in, transferring out to the base where they want to be as a captain will take years instead of the months that it does for their classmates.
A yes vote is selling out yourselves and future pilots. Full stop.