Interesting times ahead, many scenarios could play out but trying to second guess seems increasingly difficult.
There does seem to be a growing movement where any leases that have large aquifers below will be discounted due to political and scientific pressure not to drill the large aquifers.
I don't think that the valuation of a CSG companies leases will be based on 2P or 3P alone in the near future. There will be a race to secure more "easily accessible" gas to feed these LNG trains in Gladstone, i.e. no major aquifer in the leases - possibly grazing rather than cropping farms.
Fortunately for BOW holders their main leases seem to be less affected by this issue.
Does make you wonder if QGC are already looking for alternative sources by currently exploring for shale gas as well around the Cooper basin area. It could be a coincidence of timing or QGC & Drillsearch long term view of gas as the new oil.