Well, I don't think that Don Rosa would like Kingdom Hearts much, to be honest. Okay, I haven't asked him, but he's stated quite frankly that he's not overly interested in the cartoons (and the game is based on the cartoons and not the comics), only views Barks's stories as canon, and quite frankly I think he wouldn't like how the game treated Scrooge at all. ^_^
I can just picture him now... "Scrooge spending the game trying to recreate an ice cream flavor?! What the @#&! is this?!"