Calculator & points/SC display on bookings is back up, same points/SC as per current rate when you search for dates in 2020. So maybe that's all the 'enhancements' for now, until that one unsuspecting afternoon sometime in the future...
On a side note, is it even possible to do a oneworld Classic Reward at 1200mi? You'd need to cover QF + 2 non-QF oneworld partners, and cover all the surface sector distances...