1. Establish an independent inspector body that investigates misconduct or criminal allegations and controls evidence like body camera video. This civilian body will be at the state level, have the ability to investigate and arrest other law enforcement officers (LEOs), and investigate law enforcement agencies. 2. Create a requirement for states to establish board certification with minimum education and training requirements to provide licensing for police. In order to be a LEO, you must possess that license. The inspector body in #1 can revoke the license. 3. Refocus police resources on training & de-escalation instead of purchasing military equipment and require encourage LEOs to be from the community they police. 4. Adopt the absolute necessity doctrine for lethal force as implemented in other states. Use of force is automatically investigated by #1. 5. Codify into law the requirement for police to have positive control over the evidence chain of custody. If the chain of custody is lost for evidence, the investigative body in #1 can hold the LEO/LE liable.
You actually laid out some solutions. This is very refreshing. Well done. If I could add to it I would say Ending No-Knock Raids.