Some more observations:
No. 1:
....must be fitted with a serviceable Mode A and Mode C, or Mode S, SSR transponder when operating in Class E airspace.
Are they required to have it ON ?
And, out of interest, here's a direct question to
Frank Arouet .... if it wasn't compulsory, would you turn yours on?
No 2:
ROTORBLADES ... in the proposed Class E in the NW, it's no use asking VFRs to speak up, if given as traffic ... because you will never see them on your scope.... so you will never be passing them as traffic.