Complex sentence: The evolution and perceived "politics" of judging, however, has led most "classic" corps to move to exhibition-only performances which not only avoids judging preferences and politics but also cuts the costs of performing and of producing field presentations.
Split into simpler sentences: The evolution and perceived "politics" of judging, however, has led most "classic" corps to move to exhibition-only performances. This change avoids judging preferences and politics, and also cuts the costs of performing and of producing field presentations.