I'm an operations manager irl. Well, an unemployed one. That said, Charisma is something you either have or don't. Thus discussing it's merits is a waste. Delegation is critical, I agree. However, trust goes hand in hand with delegation. With a new relationship, the balance is completely on the side of control and orders as opposed to delegation and trust. That said, if a person can do a job well... that builds trust. If a person continues to make good choices and benefits others more than they benefit themselves then that person will rise in authority and responsibility.
Not all Leaders delegate at the same rate that their villagers desire. This is a cause of conflict. This is also an indication that the villagers are not acting in the best interest of their village. Conflict is not good for a village and neither is a villager who puts their own progress above the good of the village proper. On the otherside of the coin, some leaders fail to delegate because they are more concerned with their own interest than that of the village. This is also a source of conflict as the leader's personal interests work against the good of the village proper.
The answer to such problem comes in two areas, trust and communication. Villagers need to be kept in the loop as to the direction the village is heading. They also need to be allowed to give input into that direction. Leaders are responsible for such things. Leaders in turn need to count on the villagers to do as instructed without deviation. In roles where much authority has been delegated, villagers need to be trusted to work efficiently in the best interests of the village. Villagers are responsible for making sure the Leader can trust them in these things.
The reality is that most leaders do most of the work. A person who does a majority of the work in a village but is unhappy with the direction the village is taking won't stay in the village long and will likely head out on their own. The goal then, is to create a safe environment where hearthlings can toil to their heart's desire without being frustrated with the leadership of their village. The leader who can create such an environment will reap benefits of hard working villagers without a huge pile of maintenance.
Since these techniques work in real life, there must be some application that can be applicable to this game.