John, we already have a rule that handles the VNE dives...



10.8.7 While inside or within 2 miles of any Start Cylinder that has been designated for use by any competition class, pilots are

expected to avoid flight at indicated airspeeds greater than 115 mph and to pay particular attention to safe flight near circling sailplanes


Luke Szczepaniak

Do you really want to go back to a start with no 2 minute limit, so the competitively right thing to do is to get up to about 1000 feet high, then manage a high speed dive to the edge of the cylinder, while watching altitude, distance to start, airspeed, oh and of course for other gliders? Then, argue each day with the scorer about whether you have one fix in/under the cylinder, and whether you went more than 115 mph after comparing true/indicated, ground/airspeed?