+Noctis' twilight shadow form ( idk i havent played the game in a long time) is a panther instead of a wolf?
+ Noctis is still a prince, instead of a village teenaged boy
+ The darkness comes early on, and Noct has to figure out how to make the darkness recede in certain areas so souls can return to their bodies
+Noctis has a chocobo named Lia instead of Epona?

Gen preferred!

+ The bros are cowering souls.
+ Luna
+ Ardyn either as Midna that teases the shit out of Noct or as the antagonist, whichever!!!