I know they use these in the US, not sure about anywhere else in the world (definitely not in Europe). What I do know is they sill use the tail number, but replace “November” with the aircraft manufacturer/type, instead of just a random number. i.e. N543AS becomes Cherokee 543AS. Maybe for US callsigns, the system would automatically put into ATC “Cessna” instead of “N”. But if it was an aircraft that would happen for (e.g. a 757), it would stay as N543AS. Thinking of it, that is really complicated to develop, so maybe just as you suggested 😂
Why am I rambling so much here 😂
But yeah, this would be cool and sound a bit better. I was thinking about it a while ago actually. Don’t fly GA much so probably won’t clear a vote, but good idea!