In the new story of Kingdom Hearts Melody of Memory, one difference from previous installments could be the role of music. While music has always been a part of the series, it may be more integral to the storytelling this time. For example, certain musical pieces could be used to unlock memories or new areas. Also, the new story may introduce a new antagonist or group of antagonists that have different motives compared to the ones in the past. This could lead to new types of battles and challenges. Another aspect could be the way the worlds are connected. Instead of the more traditional method of traveling between worlds, there could be a new mechanic related to the music that allows for a different kind of world - hopping experience.
The new story in Kingdom Hearts Melody of Memory is likely to differ in terms of its narrative pacing. Previous installments had a certain rhythm to their storytelling, but this one might be more episodic, with each musical level telling a self - contained part of the story that still contributes to the overall arc. The character development could also be more nuanced. We may see characters evolving in ways that are not just related to their combat abilities, but also in their relationships with other characters. Additionally, the new story could explore different themes. Whereas previous installments focused on themes like light and darkness, this one might delve into themes of memory and how it shapes the characters and the world around them.