These are useful points. I actually still have QF membership from my trip to OZ in 2006, and might have considered crediting to it if not for the active 4-segment rule.
As for lounge access, I've just checked the AY+ tier system and was newly taken aback by the steepness of its thresholds! 60,000 points for someone like me who flies exclusively Economy mostly within Northern Europe (i e ~500 points per segment) would mean 120 segments to attain Silver or to stay there! Or 90 P-class segments to make a single upgrade in long-haul to Asia! This is no longer fun, more like hard labour
And 148,000 points - what, 300 segments?! - for a web-booked economy award to SE Asia?
Now I am wondering - how does the programme survive?