Since you put this in the business section, I will talk about business leaders, though many of these traits are important in other leaders as well.
Great leaders need to be able to make their subordinates feel that they are valued. They need to make the subordinates feel that their input is welcome even when it is not accepted.
Great leaders need to be brave enough to do what they think is right even if others do not think it is right (not morally right, necessarily, but right in business terms).
I think that this will bring out different responses and beliefs. In my mind, I think that a great leader is one who assesses situations and understands which model or aspect of leadership is needed in order to maximize results. For example, if a group of individuals requires guidance and structure, a great leader will understand how to provide these in a manner so that individuals will be able to replicate it themselves or provide the tools so that individuals will no longer require them. A great leader is one who understands the configuration of time in their presence. They understand the fierce urgency of now, and also understand the needs of the future, grasping the role of the past in shaping their decisions and actions. Finally, I think that an intangible of leadership is the ability to motivate and inspire others to be their best. This is one of the elements of leadership that is difficult to teach, yet helps differentiate good from great leaders.