Don't add rules that haven't been needed since the 1930s.
Some people just want to make rules....
/johnny
Each of those rules has a specific reason.
1) establishes liability for damage
2) allows for identification of the owner in the event of a failure or damage
3) limits the range of the craft by physics and not some ambiguous “line of sight”
4) under the pilot’s control means that the pilot needs to be close and able to maneuver / land the craft to prevent accidents.
5) Avoids collision with aircraft
6) Ok, 65 db might be a little low but I don’t want a jet engine buzzing my house.