TAKE A LOOK AT ALL THE FACTS
As an old CO of mine, who went on to become the Director of Flight Standards and has been cited on this forum by our mate Dick as a good man to work with - Ron Cooper - used to say, "It is very hard to argue with some one who is unencumbered by a basic knowledge of the facts. "
When I was involved in the airspace regulation business I asked for coverage diagrams of US airspace. Interesting charts.
When I suggested the radar coverage was there to support the Class E airspace volumes I was told by those involved in the US that it as the other way around - class E was there because there was surveillance coverage. Just saying.
As someone else said many posts ago, "If you are going to import someone else's system, you must import all elements of that system."
BTW the charts provided to me by Mitre also included redundant coverage - another interesting series of charts.
MJG