Loma - "To assign this corrective action to only BA is of little value. The issue of "why" is more global than that and properly a learning for all pilots." - hence my use of the words "other pilots" and why we need to hear?
I think you have a wait on your hands if it the NTSB you are waiting for. They published their 'Final Report' at
https://app.ntsb.gov/pdfgenerator/Re...Final&IType=FA which makes no recommendations - nor real comment - on the evacuation procedure.
The whole evacuation event was, to put it bluntly, a shambles. Heaven only knows what the crew were doing in the cockpit - 43 seconds from calling the evac to shutting down the right-hand engine, giving 25 seconds for passengers using 1R to be ingested into the engine.
That is where the problems lay. It may well be a company-wide training issue. I hope we will hear from the Nigels what has changed.