I fully agree with the notion of reducing pressure on those who must make the decision to go fly.
In theory you can isolate the pilot from knowing "why" the flight is being requested but at some point reality will enter into the picture.
One example....Neo-Nate flights that require an Isolette Unit.....only tiny infants go inside those.
Destinations that include a "Children's Hospital" also give the pilot a clue.
The key is to remind both Pilot and Crew....that people die every day....and did so before Helicopters got involved in EMS.
EMS Pilots and Crews are not in the Life Saving business....they are there to provide safe, efficient, Air Medical Transportation.
If a life is saved or prolonged by their work....that is a bonus.
The weather has to meet minimums or the flight is a "No Go" no matter why it is being requested.
Get that into the decision process and Crews will live longer.
EMS is not SAR......and EMS Crews are not winged heroes who due holy combat with the Grim Reaper.....they are highly trained and capable but are just out there to transport injured and ill persons.