The criteria for being a good leader, lots written about that! A good leader enables the group to make a decision thus gaining the insights of many. People won’t speak unless they feel safe and supported. Ideas need to be properly considered and thought through. Rather than being right we must look at finding and executing the best solution as the proper goal.
My favorite metric is a manager’s staff turnover. At a company with a pension or options, the date people vest shouldn’t coincide with their 2 week notice.