If the series focused on Nekoma or another rival team instead of Karasuno, it would provide a different perspective on volleyball and the dynamics of a different team. Viewers would get to see the challenges, growth, and victories of a different group of characters, potentially exploring different themes and storylines compared to what we see with Karasuno. It could also deepen the understanding of the rival teams and their individual journeys, showcasing their unique strengths and struggles on their path to success.