A quick update after 7 hours worth of observation from 70E on VH-OQF (IIRC)...
* 71D has the extra leg room, although it took the pax there a little while to work out that his IFE is built-in to the seat rather than trying to poke the one at the back of 69D (which is indeed operational).
* The said screen at the back of 69D would probably belong to the pax in 71D rather than 70E, since the angle from 70E makes it quite difficult to see the screen, and it's right in the view of the pax in 71D.
* 70E/F/G is NARROWER than the normal seats. Not a problem for my build, but would definitely be an issue for most other pax. Personally speaking, I find it a snug, private, and comfy fit for my build, with nobody climbing over me or bumping into me for the entire flight.
* 69D is probably one of the most under-valued seats - you have guilt-free recline for the entire journey (apart from take-off and landing). It's definitely my choice for the next red-eye - (SIN/HKG - AU).
* Pax are asked not to put heavy items on the floor where the emergency hatch is - although the chance of having that hatch being used is virtually zero.
* That part of the cabin is surprisingly quiet (from engine/wind noise). This part of the cabin is also free of babies, unlike in row 50s and 80s.
* The footrest/net is severely undervalued. Most pax don't use it, and I doubt they even know of the existence of such comfortable features.