Always thought best way to look at a problem with multiple facets was to break it down.
Departures is not the problem, couple of million piss off would be OK for Oz BUT with no guarantee or immediate expectation of return date/criteria/requirements as that's the work in progress.
All fares are inflated a tad to assume minimal loads into Oz until things sorted.
The hospitality/tourism sector would need some sort of ongoing support until the widest possible opening of inbounds ie tourists can be allowed.
Added bonus of shutting up the 50% or so who are bitching about not being able to depart.