One of the most important decisions a leader will make is the choice of their team! Every leader has a blindspot, weaknesses, shortcomings and, ignorance in certain things. A leaders team should be able to plug the gaps and, provide a balance to the organization.
A leader should resist the temptation to pick teams that either looks like them or, are weaker than them. This can be the case if the leader is insecure in their position. So, pick your team wisely!