Too Bad,
It's obvious that you are very content at SAA and that's great - why leave for something inferior?
It might be worth noting however, that other airlines with extremely strong union and legislative protection such as United, Delta, American, Northwest, US Airways, Alitalia and Swiss either took deep paycuts or lost massive amounts of pension money - not to mention jobcuts as well. Ask a Quantas F/O how long it takes to upgrade these days and you'll find the subject changing very quickly.
Point is, if it can happen to these carriers, what makes SAA immune to cutbacks?
We've also all heard that old chesnut about how productive SAA flight ops is when justifying T&C's, but that's a bit like saying you were only a waiter on the Titanic and that you cannot be held responsible for hitting the iceberg. True. But that doesn't mean you're not going down with the ship...