River Safari has Brazilian tapirs, they have had a calf at least 2 or 3 years ago. Night Safari has a successful Malayan tapir breeding program so possible imports in the future if Australia allows for it?
Malayan Tapirs won't return. The Australian climate isn't suitable for them.
Brazilian Tapirs on the other hand, could very well make a return as the designated Tapir species for the region. Unlike Malayans, they're far more suited to the region.
Europe has a decent number of them to supply a few to Australian zoos so they could be another option. Asia would be better though, being closer.