Wild really would have been a bad expansion if Village went ahead with it, it never made much sense. Glad that Leviathan/Trident takes up that land now.
Wizard of Oz was meant to be a Joker's Madhouse themed Raptor - custom layout, etc, before they went with the family coasters. Doomsday was originally planned as a very tall condor (144m, taller than the dreamworld tower) sitting in the middle of Superman's helix - before they decided to chuck a different ride in Boot Hill.
An ampitheatre in Gold Rush and a themed lazy river in the old boneyard/thunderbolt spot were weird choices and weren't going to achieve the same effect ST could.
Just a few I can tick off the list, most are public knowledge but always good to recap.