Probably not as bad as you might think it would be. I think the voluntary compliance is because a majority of the rules are good. Like the cloud clearance stuff, for instance. The FAA can't police everyone staying exactly 500' horizontally, or whatever, but we also have a high percentage of compliance (although there was that guy flying NORDO in the clouds that one time that gave my crew a scare...). Again, as it is, most of the system is an honor system as it currently exists, anyway, and plenty of us are more trustworthy than not.