Being of one heart has a greater impact than being of one mind. In a close environment where people work together toward a common goal, hearts that follow after God in love, create a healthy and cohesive work environment.
The apostle Paul encouraged us in the second chapter of Philippians to be of one mind. That one-mindedness was the by-product of living together in an environment of love. Love is always a matter of the heart. Many times, we miss what creates a by-product by focusing on the by-product and not what produced the by-product.
If a leader requires all team members to be of one mind, typically, that translates as being in lockstep obedience with the worldview and preferences of the team leader. That requirement actually creates a weakness in the team. It is a false unity and restricts Spirit-led creativity that only comes through a diversity of opinion. It also limits the breadth of expression and insight required to engage greater Kingdom exploits.
For example, if you are a team leader who releases edicts of how your team should respond to the issues of culture in an attempt to maintain team discipline and portray unity to those outside the team, you are creating followers, not leaders. Work first and foremost at building a team unity around the fruits of the Spirit, not your opinions. If the hearts of your team members are right and expressing love and honor toward each other, even if they say or do something that differs from your opinion, it will all work out in the end because their hearts were right. This is the kind of working environment that creates trust and honor in a team because people know they are loved in their diversity, not only in their conformity.