New Public Safety Systems

Announcing publicly, before you have a replacement system in place, that you're going to disband a police department might not be a great idea. What if all emergency services, including fire and EMT, go on strike or up and resign? While getting rid of crappy officers is a good thing, crippling an entire city's ability to respond to emergencies is not (IMHO).
what if they don't and this is the perfect time to get much needed reform and if you lose this moment you lose most energy/attention needed for substantive change