"Terraform Australia, LOL!"
They could use the room. I think they're ready for some real projects. Think of the street cred they'd get. And the farmland!
*"But seriously, Australia has a gigantic underground sea, ... maybe the place could be terraformed by pumping water...**
My thought specifically was that they get trade winds coming in from the south west. The winds come over very cool water so they don't really pick up much moisture. Set up what amounts to a solar evaporator in the path of these winds and (if it'll precipitate out someplace useful) you have something that runs by itself with very little maintenance.
The water holes & pumps method will give you individual farms, but you you can't water entire counties that way. Also, the ocean is inexhaustible.