G'Day Mr 'H',
Re yr "I continues to scratch ma' head."
Its all about not wanting to play with the VFR's because they don't pay the $$$'s that IFR RPT do.
The 'core business' is to earn $$'s from the processing of IFR only - and the heavier the better - 737's etc pay more than C404's for example - but sometimes the smaller acft just have to be processed as well.
And the more 'automated' systems' they can use, the Better the $$'s
But NOT VFR's if they can possibly help it....(IMHO of course)
So, 'they' create 'E' - where VFR acft are 'invisible' to ATC - NIL SSR at BME.
The moral - Ya gets wot ya pay fer....VFR don't pay, so they don't get....
Best regards to all.