What I would do for Tropic World would showcase various ecosystems throughout the world. (Different types of jungles, such as a Lower Montane Jungle for Gorillas, Lowland Evergreen ot Swamp Forest for Orangs, etc. I'd raze the concrete flooring and the plastic plants, and heavily plant all exhibits. The Orang exhibit would be an open canopy, same with the South American Monkeys. (See Woodland Park's Trail of Vines for a stellar outdoor habitat)The Gorillas would rotate with Bonobos in a new indoor habitat, and the outdoor area for the Gorillas/Bonobos would extend all the way to the first Okapi exhibit seen in Habitat Africa: The Forest. It would be a mixed species panorama, and an opportunity to showcase African Elephants in a forest setting. The Elephants would be in a lower forest floor while the Apes would have access to a canopy habitat. (The rest of the Elephant facility would take up the entire Hoofstock Row area as per the original master plan, and Holding could be in another location near the last Okapi Yard in the Hoofstock Row). The Outdoor Orang exhibit would take up the old Baboon Rock, and showcase them in another Canopy Exhibit. An outdoor trail system connecting Clouded Leopard Rain Forest to this new outdoor yard could create immersive predator/prey opportunities in which Clouded Leopards and Orangutans would be separated by either glass or mesh. I know this sounds quite extensive and impractical, but hey: a man can dream.