I feel that the HLC is there to make sure that witlesses in the hospital do not get out free from the hounders. Also, they make sure they do not get banned blood products without getting an extra hard time.
For instance, a person who needs blood will not be allowed to make the decision to take the blood in peace. Usually, what happens is the Hounder Committee will make sure they get guilted out of taking the blood, losing precious time in which either blood or an alternative could have been effectively taken and a good outcome accomplished. They end up suffering needlessly as a result.