I may be castigated for saying this, but I think that BMG would do very well by moving out to some new boondocks (and perhaps setting up some ground rules there based on hindshight). You say that thousands of kollel families would be burdened by this? Yes – and that is exactly what a kollel family should WANT to do in order to maintain their tranquility and isolation (which is the ideology of BMG no matter what you and I feel about isolation). It has become very easy to settle into Lakewood – both as a kollel family and as a “balaboose”, which is not exactly how Lakewood was founded.
Pick up and move, and see who follows. Those people are the true bnei torah. And the burden is far less than what has been asked of bnei torah historically. Those left behind can continue to learn, but whatever is left will be no different from any other yeshiva in Brooklyn. After all, Lakewood is merely a geographic location – it is the yeshiva and its principles that make it an Ir Torah.
The day they opened the Verazano Narrows Bridge was a sad day indeed for BMG.