Similar to 'Rotorblades' post, in my airspace I like the problem solving potential ADSB equipped VFR Aircraft allow me...especially considering some VFR pilots sleep through YWLM and YSSY airspace...(couldn't help it). Do I think the out of pocket expense is fair...? No.
Uncontrolled airspace should be just that. Uncontrolled. Sqwark 1200, identification terminated, frequency change approved'. Class 'E' is a terrible concept from my point if view...how on earth is it safe to have RPT A/C receiving a 'control service' in 'CTA' but mixing with VFR aircraft that have every right to be there too...it should be you're either in controlled airspace or you're not...rant over
P.S we still have negative RVSM or negative RNP4/10 aircraft flying around in CTA (and OCA outside of ADSB coverage) take up vast swathes of airspace...just saying....