It is often a hard fact to face, for some or many, that the basic structure of the Catholic Church will never change.  The office of bishop, from the earliest days of the formation of Christian communities, has always and consistently been that it holds a high degree of autonomy, and is the principle teaching authority within local church, and with the Bishop of Rome, speaks to and for the Universal Church.  That is the reality, that is how we have functioned since our founding, and it is how the institutional Church operates.  The centralization of power can be reversed, as it is composed of moves by power-hungry bishops over centuries without any true ecclesial, or thoughtful, reasons.  The mechanisms of oversight of bishops do not exist (except in the most critical of situations) and they will not be created, as it goes completely against the Church's understanding of Christ's charge to His Apostles.  The better question is how the Curia should be structured and what its role is.