It kinda is. Even our very own Australian friends say that all that's missing is a tree kangaroo, an echidna, a 2nd carnivorous marsupial, and a 3rd ground macropod.
But even then, most agree only the echidna and tree kangaroo are needed. As a relatively small area with unique species, Oceania is pretty well covered with their most iconic animals as well as some oddballs nobody would've thought of, like the dingo, cassowary, quokka.
I feel like it'll be something cold, not because it's winter in the northern hemisphere, but mostly because we've had 4 hot climate packs in a row plus the peccary. People have been asking for something cold, like tundra or mountains