Summary:

- Nintendo felt that the Mario and Luigi characters had low recognition among players, so they wanted to improve the art and in-game graphics to make them more visually appealing and recognizable.
- The developers aimed to create a distinctive visual style for the Mario and Luigi characters that would make them stand out and be more memorable for players.
- The focus on enhancing the art and graphics was part of Nintendo's efforts to make the Mario and Luigi series more popular and successful, by making the characters more visually engaging and recognizable to players.