You paint in very broad strokes here. That's an essential first step. Looking forward to see how you fill in the details. I think one way to head towards the ideals you describe is to have a civilian review board, with the power to discipline and fire police officers, elected by the people in the precincts being policed. I go into a little bit more detail on that possibility here, although still very broad strokes in comparison to what is needed for an effective plan.

https://teedrockwell.medium.com/dont-abolish-the-police-police-the-police-994bcbd23b81