Is it time to think about the now non existant Heli-route#4 and the other DC area heliroutes?
Paris and London have heliroutes. Been awhile since flying both of these, but my recollection is that they were tightly managed by theATC folks with radar. Ignore their instructions and be met by the gendarmerie ( at least thats what happened to a pilot in front of us who ignored a hold at Bagnolet instruction -when we arrived at LeBourget, the cops had him, and there was a big black van awaiting.
The FAA might look into these two examples.