Those are all good points.

I guess the one part I remain a skeptic about is whether or not people are going to be ok with it, much less demand it. It feels like the underlying attitude towards policing is the sticking point - the same attitude that lets police literally get away with murder would also prevent people from demanding unarmed police.

Perhaps I overestimate how pervasive this attitude is, especially in big cities. It is definitely something I'd love to be wrong about.