EDIT: reporting any range that you have not scanned will be very damaging for the hole pool project, as there would be a high risk for skipping a range where the key potentially could be located.
That's exactly why I don't trust pool anymore. Adding any range without proper validation is very risky. Herb just added ranges but he is not mining right now. There is no proof he have even enough hash power to scan 330k ranges. Why is he not participating anymore? Just added ranges and waiting for reward? Pretty suspicious.