@chrisbarela: now that the goofiness is out of my system, you ask an interesting question. There are 3 things that come to mind for me of indoor rain forest exhibits that I would like to see.
1. Forest elephants as landscape architects. African forest elephants are huge shapers of their forest systems. Perhaps Asian elephants are also. I would really like to see someone create a dynamic exhibit that finds a way to give the forest elephants a true "presence" in the exhibit (animatronics? full scale models? 3D video?) even though they aren't on display. Savanna elephants get much attention, but forest elephants need attention also as they face great conservation threats. I think that an indoor rain forest exhibit could find some way to do this in a compelling way. Congo Gorilla Forest at the Bronx is a start on this, but someone needs to take it further.
2. The gliding fauna of the dipterocarp forest of Borneo. This is a wonderful evolutionary and ecological story of convergence and solving transportation problems through the forest. "Flying" snakes, lizards, frogs, galagos, etc. could be displayed live with some kind of media presentation of how they glide, if some way of demonstrating the live gliding couldn't be found.
3. Some kind of display on how humans have lived and shaped "pristine" forests for thousands of years. Archaeological evidence in the Amazon and Africa is revealing that there were civilizations very deep into what was assumed to be forest unshaped by anthropogenic forces. This is fascinating from a historical perspective, but also from the ecological perspective that humans have lived and shaped the forests for thousands of years and should be able to in the present and future as well. Deforestation is frequently an abstract concept I think. People see endless footage of bulldozers knocking down trees and either don't care or tune it out. Maybe there is a more engaging way to get their attention if you could find a way to bring them inside a vanished forest civilization.