<<attempt to be super safe>>
One can never, ever be "super safe". Having spent a life time as a professional air traffic controller (5-bedroomed house, Reliant Robin, Austin Allegro and other trappings of wealth... and also an avid aviation enthusiast) I have seen enough dangerous incidents for me not to change my attitude about control of airspace and the need for aircraft using that airspace to be properly equipped. Of course I appreciate the desire of people to enjoy their flying but SAFETY is of paramount importance to me, far and above Fred Bloggs enjoying his gliding.
Air traffic controllers are far better equipped than pilots to see exactly what goes on. During the competitions at Wycombe I experienced on more than one occasion reports from commercial pilots of gliders "at the same level", "we have a glider above us", etc. Unlike the old primary radar, modern radars do not see flimsy aeroplanes too well so it is only sensible to have those aeroplanes properly equipped so that they can be seen.
Personally, I wouldn't set foot in an aeroplane which was about to be flown anywhere near CAS unless I knew that it had a fully serviceable transponder and somebody with a modicum of commonsense driving it. I'm NOT anti-light aircraft or gliders but I AM pro-safety at all cost.