Well first of all, I am not so full of myself to assume that I am right about everything, or that everyone should do it my way. I am merely asking questions. But to answer your question, I dont think that "cost" should be the primary gauge for deciding to do what is right. If it is the right thing to do, then we need to find a way to do it, regardless of price.
But I have not mandated that you spend a fortune either. For instance, on the patient refusal front, I think I have a solution that is low cost or no cost:
Instead of transporting everyone (as you suggested), why not just make it mandatory for a supervisor or a 911 operator to talk to the patient on a recorded phone line, and ask the patient, "are you refusing EMS transport at this time ?" If the patient is truly refusing AMA, and says "yes" on the recorded line, then you have even more proof to back up your claim that you tried everything. But it the patient hadnt refused, then he would say, no I am not refusing, they told me I didnt need to go, then you have corrected the lazy medic's mistake.
I mean how many refusals do you get in a shift ? I think a supervisor could make those calls (if you are a bigger/busier service, then you probably have layers of supervisors who could do it). Doesnt cost you a thing, unless you dont have unlimited calls on your cell package. And think of what it could save you.