The contract is nothing to see. It's the post bankruptcy deal that has been patched up with LOA's.
If we go back, LOA 58 assures we will keep longevity for pay and 401k BUT we have to start over as new hires, apply, interview, probation, etc and yes upon upgrade be junior to all senior FO's so will be a reserve Captain for a long time if they run out of qualified FO's. As far as I know they don't use Flica unless that has changed.
I'm a hair away from going back. Strongly considering it.