Kingdom Hearts 3: 10 Worlds Fans DON'T Want To See
5. Cars
Cars is easily one of the worst of Pixar's properties, and there's no real benefit from it appearing in Kingdom Hearts 3.
Even though it's generally accepted that Cars is one of the worst Pixar franchises, people seem to think that because Lightning is quite a well-known figure, Cars might be included as a world at some point.
Having a transformation world in Kingdom Hearts 3 seems pretty unlikely at this point, especially when you consider how hit and miss they've been in the past. Cars would be such a massive change of pace from the rest of the game that making it work would be extremely difficult.
Would there be combat? If so, how would it even work? How does darkness fit into the overall plot? These questions are asked of other worlds too, but it would be so much harder in a Cars world. If it absolutely has to be in, making it a mini-game of some kind wouldn't be too bad.
In all fairness, Lightning would make for a pretty great Link summon in the game, especially when considering how much of an icon he is in the Disney brand. Shame his movie's not very good.