If the years of service over here, were recognised in the increment you returned on, I would consider it, but it would have to be mighty attractive to lure me back. Right now though, the beer is cold here, and weather is beautiful one day and perfect the next, so at the moment thanks but no thanks.
Also don't think I could put up with the continuous Certified Agreement negotiation crap again. Also having heard who some of the managers are these days, scares me.
But if they are badly understaffed I would have thought they would look on Aussie Expat ATC's as a blessing rather than a burden, and lure them back, so as to gain from their skills they have learned all over the world.