I found 8Pieced 13 para narrative to represent the most likely scenario and sequence of events. Thank you for a well articulated and plausible scenario.
The one point I will make is that no-one is faultless, not even the AAIB. Unfortunately they chose to highlight the position of the primer switches as they found them, in the early interim report that they issued. This was seized on by many and inadvertently induced a torrent of speculation around potential confusion by the pilot between the position primers and xfer pumps switches. Literally hundreds of posts on the original thread were devoted to this line. Without that first responders photo it would still be a possible factor for some commentators even now. Unfortunately the position that they found them in was not the position that they were in when the first responders arrived. The position of any of those switches after a 100G impact and the loss of integrity of the scene based on unintentional human interference can not in any way be relied on. Far too much time and effort was spent on this line by many on here, with the finger being pointed at the pilot and it has taken a long time to get to the point where many of us now recognise that in all likelihood he was being presented with conflicting information that makes his inexplicable behaviour explicable, although not necessarily excusable.