Peuce
It’s clear that you simply don’t understand a proper, well-designed airspace system. You state
By that logic ... If the Class E is manned by an already overloaded Controller for the Class D airspace below, is it also most likely that the safety of the total system will be reduced?
Absolutely not! Because in a properly designed system the Class E airspace is manned by Controllers in the Centre. That’s for obvious reasons – it’s there 24 hours per day, not just for the hours of the local tower.
Peuce, fascinating to find that you have absolutely no understanding of how the NAS airspace system works.
I’ll say it again.
In NAS, Class E is not operated by the local Controller in the tower. It is operated by the centre – yes, even in non-radar airspace.