I started flying in the 70s and have had a few encounters with the FAA folks, mainly when I was a crop duster. These folks aren't like your traffic cops that are our collecting revenue, they have a multitude of responsibilities and normally if a pilot makes a mistake all that happens is he gets a lecture. Now I'm not talking about major things like drinking and flying, or flying under bridges, or just being plain stupid. The thing I have found if they feel you are operating in a responsible manner and have a good attitude they are pretty workable.
I flew into Oakland, CA one afternoon and on approach the air controller got a low on glide-slope alarm and kind of yelled at me, and I yelled back I got it, or something like that.
FAA met me on the ramp, I told him sorry but I'm use to landing on 2000 ft or less runways and I make a practice of trying to land on the numbers, and I apologized for my response to the air controller. He looked over my logbook, kind of smiled and told me to please do not freak out the air controllers, and adjust my approach at controlled airports, end of conversation.
I'm with many of you, I would love to see some of the people that actually endanger others get whacked, but until they actually hurt someone, probably not going to happen.