They just released the 4 Pro which has side, under, and back sensors now. It also has more fly time than the 4.
I love flying my 4 though....it's like R/C for dummies. My father was a huge R/C guy and I watched him crash numerous planes he built from scratch. He would have LOVED these drones.
They do have strict rules here in point of fact but they have an enforcement issue. If I went and flew over the City and buzzed people and was being dangerous....they would track me down. The stuff I do might just get some of the commercial guys tee'd off...that is a risk. I know most of them.
I tried to fly once right at the end of the summer down at Grotto Bay Beach. I couldn't understand why the drone was taking so long to connect to the GPS until I looked closely at the screen and realized the whole area was restricted. I was about a mile from the airport. I have no desire to get hurt, get into trouble or more importantly hurt anyone else.