The problem with the ref situation is there is a shortage of people wanting to come into the game and take the job. At junior level they get constant abuse from parents and players alike with some being attacked. Who wants to do a job where virtually every game one set of fans or both are swearing abuse at you calling you a w@nker or chant you don't know what you are doing most of the time.
It is probably why you don't see ex players not wanting to do the job.
Var as definitely got to come in full time to help them and then there will be no argument and more people might think about doing the job.