Episodes focusing on rival teams can add depth to the story by introducing new challenges, conflicts, and dynamics that help drive the plot forward. They can provide insight into the strengths and weaknesses of the main characters, showcase different playing styles and strategies, and create tension and suspense as the outcome of the rivalry unfolds. Additionally, rival teams can serve as a catalyst for character development, teamwork, and personal growth as the protagonists strive to overcome their competitors and achieve their goals. Ultimately, these episodes can enrich the overall narrative by adding layers of complexity and intensity to the storyline.