If safety is paramount then I would have thought that restricting riders to only 1 race per day would be a higher priority, but then it wouldn't be worth their while would it?
And with reduced practice what will be the qualification requirements?
Also I still haven't seen any figures that prove that accidents happen "towards the end of longer races", and if they do then what are the reasons behind it? People getting tired? Or people trying harder to move up a place or 2?