Change wouldn’t come from them directly, but from state legislatures, as part of police de-paramilitarization laws.
1) The state would have a standard list of weapons and equipment that all police departments *could* have, and anything not on that list would have to be turned over to their county Sheriff or the State police, for safekeeping in their facilities. Exemptions for special needs would be on a case-by-case basis.
2) No police department could receive equipment or funding directly from the federal government, it could only come through the State police, and could not be directed to a particular police department by the feds.
3) Any information provided by the federal government from secret sources would be inadmissible in state courts. Likewise, “no-knock” and warrantless searches would be severely restricted.
4) The curricula of the State police academies would be adjusted to modify the behavior of the police so that they would be far less inclined to commit acts that erode the confidence of the public.
5) Abuse of steroids by police would no longer be an internal matter, but treated as a criminal offense.
To take care of #5, mandatory drug tests, with criminal penalties for same.