Very interesting. Do you happen to have citizenship or the ability to get permanent resident status would be the first question?
Next is how desperately do you want to commit to moving. This is assuming you do not have 500 hours of Saab time. One suggestion I have is that you could make yourself eligible for Rex to sponsor you (for citizenship) by getting at least 500 hours PIC in the Saab...so in the USA that would mean go work for Silver Airways until you have the 500 hours command specified on their website. The reasoning for saying how desperately is I see you are driving an RJ. You could quit your current job, get hired at Silver, potentially as a direct entry captain (although it seems they have stopped that scheme). Otherwise you would have to fly as an FO on the Saab until an upgrade comes.
Another option is to find yourself an Aussie Sheila to get citizenship that way.
Yes QANTAS is hurting, and as you say there are other outfits hiring. As you pointed out Asia and the Middle East are where the real opportunities are. Some QF pilots went to AirJapan, and there are many Aussies working for CX.
In short, you can definitely make the dream come true, it is just what is living in a certain location worth to you (giving up seniority at your current RJ outfit/ income because you need 500 command in a Saab). Silver Airways first year pay on the 1900 is $21/hr or if you get the Saab it is $25/hr.