Some other suggestions I can offer would be to un-decomission desalination plants that are too expensive to power, pump water back up hills or run the wind turbines in reverse to blow the wind back out.

A high voltage DC line is being built to Singapore now from a solar generator in Northern Australia, so it's definitely doable to send over that distance (around 3,000mi).

I would like to see more storage though in its various forms; the oversupply is during peak daytime hours, however there's still large draw at night that could be offset.

Sun Cable was proposing a High Voltage Direct Current (HVDC) undersea cable to Indonesia and Singapore. They went into administration last year but I think came out of it with new ownership. The cable has to pass through one of the worlds busiest shipping channel (Singapore strait) and areas of high seismic activity and the distances aren't trivial. Australia is very remote and there aren't many large power consumers in our vicinity and a lot of capital needs to be raised. The Darwin to Singapore route is about 9 times longer than the current longest undersea power cable.