Fresh Expressions is just one way of dealing with the issue. The main problem is that most of us in "Church land" are not dealing with the problem at all. A friend of mine has a parish that has to deal with a major roof repair let alone upfitting the ancient heating and cooling system. Who is going to pay for this? People come and go in parish life. We live in a culture where people move for new jobs, homes, or work without batting an eye. Most people are not that committed to their local parish. They have other forms of community too, their local neighbors, YMCA, or other associations. Furthermore, Generations X'ers and Y'ers and the new "Millenials" as they call them are not interested in keeping large building afloat. But they are interested in community life that is engaging, serious, stimulating, and fulfilling. They are interested in learning about Christianity in a way that is honest and real. They are not interested in yard sales, sisterhood meetings, flower committees, or big buildings. They are interested in charity and helping others. They are not interested in Friday night bingo.
I am not sure what the answer(s) are but I am sure that we need to begin to think about them.