I'm in ground position in Saudia and can't say much about the rosters etc. However I would like to give my 5 cents with some main observations:
Pilots are most unhappy and whining staff in ANY airline. No offence, just statistics - check statistics of strikes and involved staff in major airlines.
Life and work in Saudia, Jeddah, KSA, ME,... anywhere is what you make of it. "Some people managed to make the system work" - this is true. It doesn't mean it will fly LIKE you want, but if you are good, it will fly the DIRECTION you want. It takes some time until you understand that brain-pinions here are rotating in different direction than yours.
mutt makes excellent notes about particular details in SV as an insider. Everyone is free to evaluate everything what is said and decide if this matches his lifestyle and expectations. I don't know many expats who left Saudia at their own decision though, (only one guy due to family issues).