The walkway from the Downtown Disney area to the backside of Frontierland (probably for a nighttime show) looks interesting. Kinda the way the incorporated a show lagoon into Main Street and the Disneyland Hotel in some of the early Hong Kong plans.
I'd like to see more.
There was a lot of concept art for HKDL too that never made it too. It looks promising from the tiny picture, but I'll wait for more info.