Let's see. For starters:
Dole Whip stand
Maelstrom 3 headed troll
Maelstrom viking ship couch
El Rio De Tiempo Room (like when you walk in the Mexico Pavillion)
Doombuggy ride start piece!!
Haunted mansion stretching room room
People Mover Ride Start Pieces
Grand Floridian Room
Fast Pass machine
electrical light parade prop
Well that is only my start wish list.
As far as items I never got a chance to get that existed -- spaceship eart lamp.
The resulting logic loop caused by this pin would cause a wormhole to open up leading to an alternate dimension, where VMK did not close and all cows have driver's licenses. And THAT is how it would work.
I always wanted a blue haunted mansion suit. They had it on a load screen a long time ago.
My biggest disappointment was full use Flying Carpet magic not being released. Only a few single uses being released into the game was a downer at the end. All the hype for nothing.