Always on body cams, ending civil forfeiture, replacement of police unions with individual liability insurance, third party review boards are just a few.
I think the strongest are review boards and body cams, and the weakest are busting the unions and individual insurance. For the latter, I haven't seen any data showing public support over 50%.
I think the most productive changes would be legalization and demilitarization of the the war on drugs. A centralized database of police violence and complaints would be the next step, and this could go hand in hand with third party review boards.
Even if your proposals and mine were adopted entirely, I don't think they would resolve the fundamental problems with police violence and bring behavior in line with expectations.
The police unions have too strong of an influence on government and are rife with corruption, nepotism, favoritism and worse. Breaking up the union and individual insurance are the number one priorities to break the back of the excessive authority the cops currently wield. Everything else is a nice to have.