"Do you think that Australia will retain the current situation of no death duties/inheritance tax?"
Beneficiaries of Super Death Benefits already do pay tax on those death benefits.
Go to ATO website and search and you'll find a very detailed explanation with a very different definition for dependant beneficiaries for Superannuation to the defin' for dependents for Taxation purposes in 'Death Benefits Tax'.
A table is also available detailing how much your kids-beneficiaries will pay if applicable.
