TBT: i did re-read your last post. YOU mentioned that YOU know a shadchan who would do so. I therefor encourage you to follow up and report. Your knowing a shadchan isn’t going to help the OP. The people I know who are shadchanim would be very unlikely to work as a advocate.
In additon, I personally still don’t like the idea of paying the advocate a flat fee. Pay a advocaote (if you want to go that route) as per results dates produced via their effrots. Why pay a flat fee? But if it works go for it!
Are you ready to test it and report back?
If it works we will test some more/ tweek some more and then figure out a way to make it large scale while avoiding any downsides.
TBT: are you game?