TINRIBS - sorry, but I think Helen49, and everyone else here has a good grasp of what is required. And, while interesting, most of what you are looking at when you are walking round will have changed by the time the doors are closed - so not very useful, IMHO. Information for the management of time but not for safety. The airport authorities have spent a great deal of time and money making sure your stand is suitable for your aircraft and the operations that go on around it. But, no harm in being aware as longs as it does not detract from the purpose of the walkround - making sure the aircraft is fit to go flying.
It would seem there is a consensus that the walkround is very important and that the most responsible manager around, the Captain, who signs a document to say that all is ship-shape can delegate happily as the other crew member is fully qualified and that we trust each other. We do, but the responsible manager is most aware of where the holes are (and one of these is as a result of overstretched engineering), or should always try to be, and must not forget that fact, particularly when there is a risk of holes lining up.
So, regardless of who the SOP says should do the walkround it might be prudent that the Captain do the walkround on the first flight of the day, of the duty, after any engineering work or even just when s/he feels like it. Not double-checking but exercising the right to deviate from SOP when needed. Feelings in bones are important too, which is one way humans score over robots.
And also, complacency needs to be confronted continuously. The 'office' is not an office - but can get so familiar and so warm, with superb views, that after many years it is understandable that this term is used.
The AAIB did not confront this but has, in its omission, left it to those who can and are best placed to do it, to do so. I think this is possibly another one of the holes in the cheese - and this discussion could help by encouraging analysis of other reports rather than complete acceptance.