Collectors Edition: Those who pre-ordered the game got a special edition of the strategy guide (with an interview with Warren Spector in it), themed Wii skins, and a vinyl Mickey figurine holding a paintbrush.
Cary Elwes (Westley) is Gus Gremlin in the second game.
Marth Debuted in Smash Bros.: You can bet your left foot that most people who are aware of Oswald's existence owe it to this game (which was intentionally made as a comeback vehicle for both him and his brother, and the games at least acknowledge Oswald's original cartoons). Adding to the issue is that while half of his original cartoons are available on DVD, said set only got a limited release, and wasn't released in other countries.
A Japanese release has finally been set for August 4th, 2011, with Nintendo taking over publishing duties, something they have done with other Western-developed Wii games, with the subtitle of Mickey and the Magic Brush and some fixes to the camera issues.
Screwed by the Network: Despite Disney's Crazy Awesome status listed in the YMMV tab, the finished game was originally supposed to be a late 2011/December 2011 release, but cut the development time by a full year, therefore the game technically isn't finished, which explains most ofthe problems.
To elaborate further, the change from the Scrapper/Hero system to Guardian system was made because then you'd have to worry less about people just trying to play the meter and instead make their own choices.
Word of God is that the leaked concept art was made of ideas rejected because they were too edgy for Spector.
An Alice in Wonderland level based on Alice's Curious Labyrinth from Disneyland Paris was planned but scrapped to avoid confusion with the Tim Burton film. It can still be seen in Yen Sid's model of the Wasteland.
When Mickey spills the thinner into the Wasteland, one can see the Labyrinth model sinking away into nothingness, further explaining why it never appears in the game.
In specific, this art shows the unused Scrapper mechanic, as well as the "Storm Blot", a mixture of Oswald and The Shadow Blot.
Oswald was also originally going to be the main antagonist of the game before he was made in to an anti-hero.
Several concept art shows that Minnie was originally going to be in the game.
Another storyboard shows Ursula◊ as a villain in the story. According to the Art Book, Ursula would have lived inside The Jug, originally written as a separate location from Mickeyjunk Mountain attached to various machinery filtering out the thinner in the environment.
Potential bosses for Mickeyjunk Mountain included Chernabog and a robotic Yeti exo-suit of Oswald's.
A larger example comes from the decision why the game is a Wii exclusive. It was originally a XBOX 360/PS3 game, but when he was asked about a Wii version, Warren Spector decided he didn't want to it to make it a bogged-down port. So, they decided to make it a Wii exclusive...(It should also be noted that he's also a big Nintendo fan.)