It'll be an interesting time to see how they handle the crew thing....I agree all new hires will likely end up as S/Os, but there will be a lot of current S/Os who end up on A320 F/O bypass pay if the current 737 drivers just swap types.
Could be a real catfight when a whole bunch of A320 F/O jobs are advertised and current domie F/Os are outbid....does that mean they drop back to being S/Os with associated major lifestyle upheavals? Maybe the new entry level payscales will be based on A320 money? (yeah, right!)
Likewise with captains....what if current 737 captains are outbid by (for example) over 60s? Bye-bye command, hello long haul?
I hope it is handled with some sensitivity....but more likely to be an utter shambles with the usual backstabbing/grab what you can regardless of others that is so typical of pilots in general.
I'll be watching to see what happens when the first new positions are advertised!