I don't know. I do like the idea but I am honestly not sure whether it might actually do more harm that good - create a bunker mentality rather than get Witnesses to think.
On balance I don't care actually, the sneaky side of me would just love to send that "generation" postcard to a few people I know.
If this idea takes off I think I might avail myself of the "provision" as it were.
But a final thought - is it legal to send people anonymous mail?