Interesting discussion Br UBAB.
I'm not sure about the whole 'coming to the West' thing though because divorce rates in the Middle East aren't that great either.
On a slight tangent I really do think parents need to *network* more even when their children are still young. Years of getting to know different people and families really well should
inshaAllah increase your son's/daughter's chances of finding a suitable spouse.
Overall, though, certainly no easy, or quick, answers.