StrengthsFinder 2.0 is one of my favorite leadership tools. It helps individuals identify their top 5 areas of strength and, consequently, what they have to offer their organization. I have begun using this tool with teams and, upon seeing certain combinations of strengths on a team, began wondering how they work together.
For example, strength-themes that three people share will tend to steer/monopolize the group simply based on the strength in like-minded people. However, a theme that only one person has can be easily overlooked or stamped out, usually without intentional thought.