GAW:
Glad to see you agree that the present system is broken.
Now we can discuss ways to change and improve. The idea of the OP is a great one. Obviously we can always look to tinker and change up a bit. But I have no doubt that if/when the new idea slowy becomes popular it is the singles who will benefit most.
It can be tried on a limited scale. One rov in one shul in one community. As word get around of the way they treat shadchanim you can be sure the singles in that shul will be getting far more attention from shadcahnim (professionals and non professionals). It will then take off in a big big way.
Let work together to help them out.