Wellington Free Ambulance have implemented a variant of this concept. Pre National Certificate wear the standard WFA symbol with no title. Obviously this will be a sensitive subject for some. The name paramedic has been used by ourselves to represent people at the pinnacle of ambulance training. The fact remains though, that the term is misunderstood and misused.
Nothing stops anyone from describing themselves as a paramedic to the public.
This system will present a unified front with recognisable levels that would be easy to explain and are logical.