Final answer:
Greater diversity is not an expected advantage of self-managed teams as it is not a direct result of the self-management structure, although it can lead to increased skill sets and improved performance if managed well.
Step-by-step explanation:
The question is asking to identify which of the options listed is not an expected advantage of self-managed teams. The concept of self-managed teams often leads to several advantages such as better performance due to enhanced commitment and decision-making involvement, decreased costs resulting from reduced need for middle managers, and higher morale as team members often feel more satisfied and empowered. However, greater diversity is not directly an outcome of self-management but is rather an attribute that may or may not be present in a team. While diversity can lead to increased skill sets and improved performance, it is not an inherent result of the structure of self-managed teams. In fact, if not managed properly, greater diversity can introduce communication and interpersonal challenges, though the potential benefits of diversity, when harnessed correctly, are substantial.