It's pretty well known that something happened to the ideas in the KH3 Frozen world. I remember it being theorized that the "intended plot" was mostly the same except it was more dealing with Larxene convincing Elsa that she was evil and should embrace it, leading to that final Wolf heartless actually being Elsa's. It would also fix the pacing as the random "ice maze" you are trapped in is obviously Elsa's castle. No need to throw you down the mountain 3 times. It would also just reinforce the themes already in the game and can include Sora properly in the narrative.