MJBOW,
Firstly Class E, both in terminal and enroute areas is for the benefit of IFR not VFR,
Rubbish. Martha King said as much at the roadshow/Publicity Stunt in 03 (I think it was). The ONLY reason E exists is so VFR can do what they want. If there was no VFR, why would IFR want (or need, for that matter) anything less than C? So we could do the fabled IFR Pickup??