Two prominent American roshei yeshiva, Harav Malkiel Kotler Shlit'a and Harav Elya Ber Wachtfogel Shlit'a were recently in Eretz Yisrael. While there, they discussed several issues with gedolei yisroel. One particular issue was the so called Shidduch crisis and whether to enforce an age limit of 22 on yeshiva bochurim coming back from learning in EY to Lakewood or other yeshivos. Currently most boys in the litvish circles on average get engaged at the age of 23 as they first go to EY at the age of 19-20. The effect it has on the Shidduch crisis is the age gap. Since girls are entering shidduchim and getting engaged at the age of 18, add the population growth, and you have many more 18 year old's than 23 year old's.
However, even if the amount of boys and girls are equal in the same age bracket, the 23 year old boys are not all getting engaged to 23 year old girls. They are dating girls from the age of 18 and up resulting in many more single girls on the market. Recently many attempts, incentives and ideas came up on closing the gap. One idea was to have the girls start at 19. Noted speaker, Rabbi Paysach Krohn, has been advocating for boys to go out and date girls their own age or even a few years older than them, which would result in bridging the gap.
Having boys return from EY at an earlier age is another option to bridge the gap. It will force bochurim to start shidduchim at a younger age. It has not been implemented yet. Many questions remain as to the specifics. For example: what will happen if a bochur comes back at the age of 23, or will all this ever actually be implemented? Another issue is in regards to Pell grants. Students learning in Israel have recently been able to obtain the grant resulting in using it up much sooner, which would force yeshivos in America who are also using Pell grants to raise the tuition if students enroll with used up Pell grants. This idea will obviously have an effect on the Israeli and American yeshivos, since the boys will not stay as long in EY or not go at all.