DY & RC: The yeshivos believe that the longer a boy is in Beis Medrash, the better. They will not suggest that thye boys get married earlier (Call it a conspiracy theory, if you will. I call it their interpetation of the Gemorah Keddushin.) 😉
The one solution that I have heard that could work would be selectivly extending “the freezer” for Lakewood boys, to extend the period for younger girls exclusivly. I don’t expect that to happen, though.