I still say the Gedolei Hador should immediately issue a kol koray that ALL professionally paid shadchanim have a chiyuv to make at least 5 successful shidduchim per year pro bono for “hard to make” shidduchim (older singles, physically or medically challenged, BT, Geirim, etc, or any combination thereof).
Do you really want the gedolei hador to start making mandatory takanos?
Additionally, the rabbonim should declare that every shidduch made l’sheim mitzvah gets a sachar in olam haba,
Done already, as I think you already know.
whereas evey shidduch made for business purposes gets no more sachar than does working at ANY occupation for a living.
Do you really want them to lie?
You are painting peoples actions and motivations with only black and white brushes, but they’re more complicated than that. People do things for multiple reasons, and receive schar according to the level of “l’shem shomayim”. It’s not all or none.