I went to an Welcome Aboard Day a year or so ago.
There were a few of Aussies being assessed, only one made it to the afternoon session. None of the recruiters were Australian and I don't think it's very high on their priorities.
They will not provide accommodation to anyone relocating. Only ME airlines do that.
As for the height restriction, I believe it is an Australian OH&S thing to do with the Upper Deck on the 744.