Diligent said:
Not that I really have an interest in Disney or a game inspired by its characters (yeah yeah, I haven't played Kingdom Hearts, sue me), but the whole "darker meaner" image didn't work with Prince of Persia: Warrior Within, so it sure as hell wouldn't go over too well with Mickey Mouse. You don't need a focus group to see that.
This is the reason. There were countless, countless attempts to make characters more "mature" (read: GRIMDARK) stretching across all mediums, including the entire Dark Age of Comics in the nineties... and most of them have failed. Just from the genre of platformers, i can bring up two examples. Developers have tried this with Prince - and most players thought it didn't work. They have tried it with Ratchet - and again, most players thought it didn't work. Us nerds should understand that some characters will not benefit from "GRIMDARKIFICATION", appealing as it may be at the first glance.
GRIMDARK SPESS MAHREENS and such may look "mature" and thus more respectable (even though they are not), but we all know that cartoony characters are not supposed to be "mature", for real or not, in the first place! If Mickey Mouse suddenly turned GRIMDARKCORE he'd just be totally out of place, and if prankster transformation was style-appropriate... do you all want him to suddenly sprout a handlebar moustache and start cackling maniacally? I mean, it would look pretty damn funny, but it's not
like Mickey Mouse.
In summary: even if you make them dress and act accordingly, Prince Of Persia was never really a macho berserker, Ratchet was never really a SPESS MAHREEN, and Mickey Mouse will never really be a Dastardly-Whiplash type of character. Why? Because they are not good at it, they weren't
designed for that. It's time we face that fact.