Canopies should not be on the list at all.
There is a reason that they don't have cockpit covers.
Le Mans, BTCC, DTM and other racing series have "cockpit covers", AKA tin top cars, so I don't really understand the safety related arguments.
I would prefer it if F1 and other similar series remained open cockpit, but I can see the inevitable happening at some point.
Why don't we simply mitigate the risk by having the pit limiter enabled 100% of the race, then the drivers can't go quick enough to get themselves in trouble. Or we could just recognize that motorsport is inherently dangerous and that the tragedies that have occurred are still a tiny fraction of races that have occurred without injury or death.
I think you've missed the thrust of my point, which was if you take a statistical view of all the deaths and/or injuries in motorsport then my understanding would be that drivers being hit in the head by debris would be a tiny fraction of those incidents, so why not look at the larger causes of the incidents as a priority?If it's inherently dangerous then why have any safety aids whatsoever