A couple of thoughts -
EMS industry seems to be looking like the US Airmail in the early days.
METARS and area forecasts do not cover local WX. How about if we had something like an AWOS machine attached onto cell towers then a better WX picture can be developed. That would be a huge investment so another solution could be to have weather spotters. These could be fligjht students, retirees, bored houswives who get some training in WX observations and feed it into the internet and is it made available to EMS pilots. Volunteers can be motivated by some simple rewards and recognition.
When I hear, "we got to land because of weather", that is a flight that should have never started.