AZ:
1: There is no reason to place additional tzedaka requirements on the community for no reason. Telling me “the community will pay for it” with all of the other good causes that are not being paid for (like tuition!) seems unlikely to say the least.
2: Unfortunately quite a few, taking into account the 10+ years they may have been in shidduchim. The additional cost will also make girls “think twice” about going on that “third date” (as others have pointed out).
3: As far as the second point, your “200 girl” case is valid, so hiring a single shaddchan for the entire Brooklyn (or even Lakewood) will not work. A smaller scale (such as a shul) will.
This is not to say I am against paying to get a shaddchan to look at a girl (as per my first post). I am more against it becoming the norm (it MUST be paid) and the arbitrary definition of “success”, vs. the tangible result of a shidduch.