It is nearly impossible to hold a leader accountable. It's their priorities we follow and they can change them when they want. The best leaders lay out their priorities in a guiding principle document and allow their employees to challenge them when they deviate from those priorities.
Hiring employees that you treat as adults will save you time, energy and money in management overhead. Good chance that if you treat them like adults, they will act like adults.
The role of a Marine Corps Officer is to: 1) Complete the Mission and 2) Take care of your Marines. In this order. But, if you take care of your Marines, they will take care of the mission.