No, Goliath at SFoG was planned for years. At one point it was thought that we would get a Tony Hawk coaster where Dare Devil Dive now is. But, other than that... there's very few rides that never made it into SFoG that I'm aware of. Sally desperately wants to add one of their dark rides there.
There was a theme park proposed for Israel, Neverland by Michael Jackson (Goddard did the designs... fantastic work) and then, of course... DUBAILAND. Probably the biggest failure in all theme park history. USDubai had started construction when the project fell through... right now it is a big, shaped hole in the desert with some abandoned offices.