It is what it is. If we get in a crash going there then does it matter what the caller says?
yes, but you know as well as I do, you can get in a crash without L&S. just look at all the MVCs in your coverage area. I know that, statistically, L&S do increase the risk of a crash, and, again statistically, the use of L&S doesn't save you a significant amount of time (IIRC, 60 seconds at the most), but statistics can also be manipulated to whatever point of view you want.
Our dispatchers are an accredited agency that uses an endorsed EMD system. They are professionals and quite good at their job. I trust them to do it correctly and get it right most of the time. While there will be occasions that what is said is not reality, they are few and far between.
I used to work for an accredited 911 center, which used EMD (likely the same one used by your system). people still lie to dispatchers, and some call takers are still better than others at following the system (we had QA/QI, but it was more of a joke than anything else).
Who are you trying to convince? You mention that you are bringing the idea to your governing body.... are these elder EMS people, or town officials? If you are the head boss, you make the policy, and run the day to day operations. Do you have to run all policies by this governing body? wasn't running the organization what you were hired to do?
I'm actually 100% in favor of more cold responses, especially when EMS isn't going to do any timely interventions. If it's not an ABC issue, and the ambulance and crew is going to be simply providing a comfortable ride to the hospital, there is no need to rush. I'm also a huge opponent of hurry up and wait; so if there is a shooting/stabbing, or EDP, or assault in progress and you are advised to stage until PD clears the scene, what purpose does responding L&S serve? It's not better than the FDs that use lights and sirens when responding to a cover assignment for a structure fire.