Reading between the lines after many years of following the day ticket situation, I believe that the number of tickets currently reserved for day ticket allocation (at least 50% of Balcony Standing, the whole of the Stalls Circle Row C benches and a larger allocation in the rear Amphi, as well as those Row D Stalls Circle ones) is actually considerably more than the 67 they claim will be available, and that the current proposals will reduce it *to* 67, not from.
Could be wrong though.
It's only since last Christmas that the ones at the end of SC row D have ended up being put online after the morning queue, too. They always used to say they couldn't sell them online as people used to complain that the fairly extreme restricted view hadn't been adequately explained. Why that applied to those places and not the far more restricted-view ones in Balcony B, I don't know.