It's hard to say for sure. Different people might have different ideas of how the story ideally should have ended depending on their expectations and interpretations.
It depends on the genre and the themes of the story. Different types of stories might have very different ideal endings based on what the readers or viewers expect and what the story has built up to.
It's hard to say for sure. Different people might have different ideas about the ideal ending. Maybe it could have had a more conclusive resolution for the main characters.