I've thought about it many times. It's a bad practice because the overseas beneficiaries of the money inadvertently acquire a distorted sense of their own value and worth. They'll always expect a handout and think it's their human right, perhaps traveling for family reunions here in OZ. Or for trickle donations to foreign terrorist organizations.
Australia is $2Trillion in debt at present (Fed and States), how are we going to pay that off? - that's another important question. We need to keep as much money here as possible to build the economy. Halving the amount of remittance sent overseas would be a good move. Govt's can put a lower cap on it. Hanson would, that's why she's there. The major parties won't, they're too internationalist, looking after everyone except Australia.