AZ, the inefficiencies of the shadchan system have most certainly NOT been addressed effectively, or even half-heartedly, or sloppily. Your statement will be correct when shadchanim start redting shidduchim to boys and girls at the same time, as any old-time shadchan will tell you used to be the norm. Before we try game changing plans that are difficult and perhaps foolhardy to implement, why don’t we try this small simple change? No money or Kol Korehs necessary.
As for your charts and mathematical calculations- I’ve been zocheh to be married for a lot of years. (Exactly how long? Don’t try getting ladies to divulge sensitive info that may reveal their age.) My friends and I were born during the post-World War II baby boom, a time of great population growth among Jewish communities as well. Why didn’t we have this problem? Zero girls in my graduating class never married. And back in the day we all had plenty of dates and fine young men to choose from. If the math works now, it should have worked then too, correct?