My read of the proposed rule change is as follows:
The proposed change would lift the current glider exception. The current exemption allows us to not have a transponder (or ADSB or TABS in the future) when:
1. Fly within 30 miles of the class B (mode C veil) and under the shelf.
2. Fly above 10,000 feet MSL
3. Fly in class B or C.

What else?

Thanks,
Jamie Shore