I agree with you.
The police, as an institution, should be abolished.
And a new institution put it its place.
And, off the top of my head, just a few things it should do differently is in no particular order
Citizen Oversight boards made up of 7 educated citizens (with no professional or familiar connection to law enforcement), chosen at random, to serve 3 month tours, with 3 local lawyers, also selected at random, and in good standing, to advise on the legal side of things but with no vote themselves. (Cause sometimes just cause its not technically illegal doesnt mean its not horrific and awful and deserving of punishment/reprimand)
national black list, so cops that do bad cant just jump ship to the next jurisdiction over.
Liability insurance, that is paid for by the replacement organization, out of their wages, with no payout caps (because fuck being permanently crippled due to abuse and only getting 30k)
No qualified immunity.
must live in the communities they serve.
no training them to think or behave like their the last surviving member of a super elite commando unit behind enemy lines, and that everyone is their potential enemy.
training must take longer than it takes to become a beautician, including extensive learning of not just what the laws are, but what is expected of them as a servant of the public, behavior and atittude wise.
regular refresher courses, at least 3 months long, every 2 years, to maintain, update, and verify their knowledge of the law and the duty they choose to take up, failing this course is a firable offense.
Then put all the money you save from all of this, and put into social needs and improvements.. Which will reduce crime more than putting a bunch of paramilitary wannabe pretenders on the street.
edit
Oh, and one last one.. mandatory +20 years to any conviction, for betrayal of the public good and public trust.