Disarm and civilize the police but keep their SWAT units as a separate department that only backs up police when requested.
This would throwing a lot less people in jail and having police that live in the community. But hey, this is just wishful imagination, politicians and police union would commit sedition if anything like this happened.
At USC, they have these security people who just walk around the off campus area and report belligerent activity. Their uniforms are bright, so you can spot them at night and run over if needed. At the very least this sort of security needs to be in place in all parks and transit stops, there are just too many insane people left to fester on the street unfortunately. I'd love to have more shelters and mental health services built, and fully support all efforts at the ballot, but that's a 5-10 year timeline with land permitting and construction versus just handing out high vis vests and walkie talkies, and the situation certainly isn't improving in the mean time.