How would the criminal justice sysytem be altered if state attorneys general were given authority to supervise locally elected DAs?

In my state, District Attorneys are elected by the people of the
Judicial Circuit, but are under the supervision of the State Attorney General. The AG does not
have power to "fire" the DA, but he can supervise, and take over the prosecution of a case
if/when he feels it advisable. Also, if the DA is involved in any questionable activity, the
Governor has the right to suspend him pending resolution of the matter, and can remove him for
good cause shown. By this method, the local populace has some control over the administration of
justice in the local circuit; however at the same time, there is some uniformity of justice
throughout the state.