Ok, so here is what I'm able to find/remember. Eisner commissioned the two teams of imagineers to come up with a ride for Fantasyland.
One team came up with Bald Mountain, which was to be a flume ride of sorts where all of the Disney Villains were meeting to plan an attack. The leader of the villains was Chernobog, and at some point in the ride, the villains would notice the guests intruding upon their meeting. At which point the guests would either have to prevent whatever attack was going to happen, or be chased out of the mountain.
The other team came up with a morphing coaster idea called Fire Mountain. This was to be an erupting volcano where at the point where the volcano erupted, the vehicle was supposed to switch from a standard coaster to an inverted coaster. This idea was also revisited in the Dragon Tower concept for Beastly Kingdom. This ride was meant to be based on the Atlantis movie that
didn't do well in the box offi
This was all because of Islands of Adventure, and when that did little to
Disney's attendance, it didn't seem to be as necessary. All this expansion came from the 3 part article on Jim Hill Media where he discusses all of the
possibilities of Disney expansion from the early part of the decade:
http://jimhillmedia.com/search/SearchResults.aspxq=Is+DAK's+Beastly+Kingdom+DOA&s=3