That market will be quite small for a while to come. Rather than waste the space, discount the fare and encourage people to trade up or offer an attractive redemption rate to get pax to burn up the FF miles. Possibly even offer the high status regulars a guaranteed free one class upgrade when purchasing their tickets or an automatic upgrade subject to space, once onboard. They seem to be in demand at the moment with a few status matching deals on offer for those prepared to change horses.
It will be sometime before the premium cabins become a cash cow again, the financial fallout will greatly reduce the number of people who turn left or climb stairs when they board the aircraft.
The EK business model of flying in people from the four corners of the world, mixing them in a central location and then sending them out in waves all across the globe is exactly what governments want to avoid at the moment. The idea of passenger X from Brazil, sneezing on passengers Y and Z in the duty free shop in Dubai, who then fly on to London and Sydney respectively would give the health authorities nightmares.