I’m not sure what the hold up is with that. They have a ton of them at Werribee and the exhibit was looking ready to go when I last visited in December (they were cutting the grass etc).
I’ve always thought a Capyabra would be a better compliment to the adjacent peccaries (especially considering the old tapir exhibit has a pool) with Lowland nyala ideal for the old bongo exhibit.
It would be rather ironic that they ended there bongo, because of one that broke bones and died. Siting the habitat unsuitable if I'm remembering correctly. To then go and put virtually the same animal back in the same exhibit. They may as well have just kept bongo.