I am certain that girls who are part of this program will get engaged and married at a higher proportion that those who do not. Money talks. However, if a father would let it be known in the street that there was a bounty on his daughters head for a shidduch, he would have people banging down his door with shidduch suggestions as well. The only difference is that in your scenario the father and his daughter get to save some shred of dignity by not having to declare this publicly. Only authorized shadchanim will be privy to his busha.
It’s a start. I admit I dont have any better idea. Hopefully it will be successful.