I have my second change in direct boss in 3 years.
There are 3 pillars, ideally balanced, for good management. You ideally should have good SYSTEM, a properly designed STRUCTURE and good PEOPLE. These 3 elements interact with each other and in perfect balance you have your desired CULTURE in the middle.
You can't really improve on it by replacing just one of the 3 elements. There are numerous factors affecting the stability of the system and the complexity increases exponentially with the number of people involved in larger organization.