Well the problem with the good behaviour idea is that governments are not waiting for volunteers to start lifecasting. They simply put their surveillance cameras everywhere. This is already happening in Europe, don't know about the US. Big Brother is growing...

Another interesting question is what kind of good behavior would social pressure evoke? Would people use the same yardsticks for themselves as for other people? Or would they just try to hold society in check, so that they themselves could roam free?

"in a world where few people are genuinely religious"

I would argue the vast majority of the world is genuinely religious.

I'd contend that the vast majority of the world pretends to be genuinely religious, and is genuinely superstitious.