The features you refer to are not bleeding edge, and not only that, they are security features. We are still discussing internally but I hope we can publish soon the details so that point can be addressed.
Final but not last, this only affects our challenge system, which is never issued by us as a blanket action across Internet traffic. It's normally a configuration a Cloudflare user implements in response to an ongoing issue they have (like a bot problem). We do report challenge pass rates and error rates but we can certainly always improve that feedback loop.