Carwardine Parks/Cancelled Plans

Carwardine Mach Fun (Carwardine Colony)
The Carwardine Mach Fun was a cancelled transformation of the Carwardine Mover at Carwardine Colony meant to debut in 2000, in the vein of Disneyland's Rocket Rods, it would turn a slow moving ride into a fast moving one. The ride would close early in the 1999 season in early August, as several of the track pieces were reformatted to handle higher speeds (unlike Rocket Rods), the ride was cancelled and would reopen in December 1999, although with the track layout modifications intact, minus the banking.

Charles Dinn Zelda Themed Wooden Coaster Layout (Rose Park)
Charles Dinn personally sent Carwardine Parks a concept for a wooden coaster at Rose Park in 1991, Carwardine Parks approved it and would theme the coaster to the then-newly released "The Legend of Zelda: A Link To The Past", and have it open for the 1993 season, but the plans were cancelled as Dinn filed for bankruptcy, Carwardine then sent the layout to CCI, who denied the layout since they didn't have enough staff to build that big of a coaster at the time. The coaster was cancelled and all that came of it were trains made by D.H. Morgan, which would be relocated to Camp Carwardine to replace DFW Destroyer's original buzz-bar trains by PTC, which were becoming a safety hassle by then.

Into The Deep/Submarvels Of The Deep (Carwardine Corners)
As part of the founding of the RideTeam alliance group in 1995, Disney was willing to give nine of the twelve vehicles of the former 20,000 Leagues Under The Sea ride at Walt Disney World to Carwardine in order to build a submarine ride in a man-made lake at Carwardine Corners, but after DreamWorks' purchase of Carwardine Parks, the plans were scrapped and the vehicles remained located behind Manhattan Mayhem until 2001 when Backfire started construction, in which they were moved to Centerpoint Park inside the Super Mario World dark ride, which they can be seen during the Bowser's Castle scene if you look hard enough, until, in 2008, they were moved to Darien Lake and eight were buried under the titular lake with one floating in the middle.

Simpsons Springs (Multiple)
Simpsons Springs was a land planned for Carwardine Colony and a few other parks back between 1995-1996 to expand upon the Simpsons concept than just the theatre, this land was to contain a motion simulator titled "Nightmare in Krustyland", a 1:1 scale recreation of Moe's Tavern, Krusty Burger and Lard Lad Donuts (with Moe's Tavern being one of the few places in the chain to serve alcohol, in this case, Coors; Krusty Burger serving food provided by McDonald's and Lard Lad Donuts serving food provided by Dunkin' Donuts) and several other landmarks, several drawings exist for the planned land and only features like the statue of Jebediah Springfield (from the Season 1 episode "The Telltale Head"), a gift shop at the exit of the Simpsons theatre and a grand statue featuring all the main characters and some of the side characters were built, the film "Nightmare in Krustyland" was completed but shelved until Halloween 1998 when it was shown at The Simpsons Theatre.

Other plans included changing out the Jebediah Springfield statue every Halloween to a headless version (ala "The Telltale Head"; albeit the plans for the changing statue were scrapped early on) and having an Animatronic (or Walkaround Costume in some plans) version of Moe at Moe's Tavern.

In 2019, more plan files were found at Carwardine Studios, showing a possible shuttle launched coaster by Premier Rides similar to Schwarzkopf's Shuttle Loop.