Its the mere fact that arguments like these are even possible in Australia that tells me that the regulations are legalistic crap.
Why ferchissake is it so hard to put down a simple "Must have", "Should have", "Could have" based on the intended route, aircraft range and duration and put us all out of our misery?
This ranges from WAC or VTC/VNC onwards and upwards.
To my limited way of thinking, it is foolish not to have access to the details of any airport you might conceivably divert to. In my case that means carrying ERSA, VNC/VTC, WAC outside the Melbourne basin and a PCA plus ERC if I am touring.
And of course the trusty Ipad with OZ-Runways
I didn't need to open a single paper document on the last Ten day tour. Even had the POH and VFG on it for good measure.