What if the NPRM that came out this past summer goes through and gets rid of the glider exceptions to transponder and thus ADS-B mandates? Almost all contests in the west that get above 10,000' will now have gliders that must be equipped with transponders and ADS-B out compliant with the FAA's TSO specifications. This will also be true for some areas in the east where glider transponder exceptions are currently used. How will FLARM be able to filter out ADS-B reported gliders while using stealth/competition mode and not other ADS-B traffic? This will require another completely new FLARM system to be able to transmit and filter ADS-B out signals. Is the RC going to be able to force FLARM or anyone else to design and build a device that will be compliant with all of the FAA mandates transponder and ADS-B out in addition to the FLARM functions we need for the types of operation gliders typically perform? Or are we going to paint ourselves in a corner waiting to fly a contest while hoping for that future device. ADS-B out for us is coming soon whether we like it or not. I for one think out and in is a good thing for everyone who shares our skies.