An extensive report; ‘comprehensive and thorough’ to the point of using every flight safety and HF cliche in the industry.
If you require a crew to undertake a very challenging operation in limiting conditions, with significant operational hazards, then the better conclusion is that the accident was an operational risk.
Those on the front line managed what they could at the time; those in background, with hindsight might have managed to greater effect, but those distant managers conducted their tasks very well - never took their hands out of their pockets.