I think removing their union protections (I'm a union member and I don't think they should be afforded the same types of protections since they're not labor, they're the armed section of government who are the only ones allowed to use force on the citizens) and making them carry insurance would be a start. Then, moving their budget to do something about the fact that so many of their calls are to deal with mental health crises which they're not trained for. Plus, for as large as their budgets are, I'd expect better results in solving crimes. Lots of police departments average something like 25% solve rate which includes things like when people turn themselves in.