I am not sure what you want as replys to this, but I really think there is enough regulation on small aircraft.. adding a transponder to a glider would be a really useless considering that a glider pilot is always looking for thermals to climb in.. sometimes they can obtain several thousand feet/min.. further, not many glider operations are near major airports and they don't usually fly higher than 12 to 14K and only a limited time at that..
I climb profiles for most 121 ops and the desire of ATC is to get them high and do it asap.. as a GA pilot I rarely have any issues with commercial aircraft, I do have a transponder equipped aircraft as is required.. but lets not go further by adding this on gliders.. what will be next? sport pilots, ultra lights? Just how low do you fellas plan on flying??
The VFR charts do have designated glider areas, and I would high suggest that glider pilots use these areas..
JMHO
Really??
I think you should reconsider this.
http://www.businessjet.com/blog/2006/08/miracle-mid-air-between-netjets-hawker.html
Every time you fly into Reno you are risking lives. That place is a glider fest and they fly right in the arrival routes into the big airport.