But you will not mention the obvious. If we had C airspace provided with the proper tools and staffing, it would indeed be safer. However, we use large amounts of C airspace controlled by a single Controller in the D airspace below. This is the reason other countries have E above D. They wish to allocate their safety resources effectively, and don’t want the concentration of a Controller in D airspace close to the runway to be affected by having to provide a Class C service at the same time when the risk of collision is far less.
and wait for it;
Of course, figures for C over D are going to be very hard to get from experience, as we are the only country who has this type of airspace – and we hardly have any traffic movements in it.
Couldn't help myself;
Let’s say you are going to take your family for a fly in a Boeing 747.
Guess who would be sitting in the left hand seat?
Who wouldn't be sitting down the back?