Your Super will consist of a Taxable element and a non-taxable element.
Upon death, only the Taxable element is subject to tax. So if your Taxable element is , say 50%, then only 50% will be subject to tax. In effect 100% but taxed at half the 17% = 8.5%.
If your taxable element is below 25%, then your effective tax rate will be below 4.25%.
Unless your tax liability upon death is less than a few thousand , then it may pay to seek professional advice. If you act in haste you may life to a ripe old age and regret not spending a few hundred $ for advice.
