Maybe if it is going to be 1000 points, then as
@ChrisMars suggested, they might add additional options other than the carbon offset.
British Airways offer the opportunity to contribute to the purchase of Sustainable Aviation Fuel (SAF) which earns tier points (the BA equivalent of status credits) . This contribution towards SAF is not directly linked to a flight purchase.
Perhaps Qantas might add a similar option to the category. That would make 1000 points more within reach even to those only flying QF domestic flights.