They have made it very hard to write individuals back in private massages.... a timer after every response... I don’t have that kind of time, nor the patience. I am going to try to address all questions openly all at once.

Most FO’s will come back close to the duration of their leaves.
All 73 CA’s back by May
The current 200 or so Airbus CA and FO’s can expect to stay out close to their duration, slightly adjusted for training needs... but close for most. Captain transitions will be needed first, unsure how they will implement that. Probably, CA/CA Airbus to 73 transitions.
Almost positive SFO is closing. Right now company is trying to decide what to do with 110-140 lines of Airbus flying for the next 18mos.... Shrink both bases evenly and eat the additional rsv costs, closing SFO 10/2022 and keeping LAX Airbus open w/ 40ish lines of flying. Or slightly growing LAX Airbus for a year and closing SFO 10/2021. I would expect something out to everyone May to June timeframe. I don’t see scenario where SFO w/ co-terminal stays open but have advocated for it. The total ask at this point in my mind is a HUGE concession.
Just a swag on this one A321/LAX closure, best guess 9-30-2024.
About 30 more SEA CA’s to come back 5/1, pretty sure most SEA FO 9’s back 5/1 also.
Not many if any Airbus pilots will get the 2nd summer