I really like the design of the old bear enclosure, and I feel like something similar (yet on a grander scale) could be reproduced in the final enclosure of TOTE.
Here's a photo of it:
You can see that there's a lot of space to work with, and the rocky designs already semi simulate different climbing opportunities. The exhibit also slopes away before the path, so they already have a decent barrier. They'd just need to add a more suitable fence line around the back of the enclosure. I feel like if they allow grass to grow, and more trees were incorporated in this enclosure, it could quite a wonderful exhibit. They would also have the opportunity to add a viewing window to the left of this photo, where there's a viewing area that comes right up to the current paddock.
This would be a perfect fit in my eyes and should definitely be something Melbourne consider.