"I don't think that this approach does much for religion because the space of ignorance is shrinking and with it God's space."
God's space as you call it hasn't shrunk all that much given that only around 10% of the world's people admit to being atheist.
Most on the other hand hold some form of belief in a higher, all encompassing power, even though many in our society do not attend formal religious institutions. There are many seekers today and many places to look.
3%-5% of Americans are atheists. Probably more here, but just have a think about much of the rest of the world's populations and cultures.
