Refs have a hard enough time and can be less effective in determining a knockdown let alone the orgin and cause of a cut, abrasion, bruise or all of the above. Judges and fans do notice and i think it plays an unspoken factor already. Facial damage can be a combination of head butts, shoulders, laces on one side and a clean punch on the other eye, literally. It would be a case where replay would be almost a must. If we start considering scraps and damage done off more subjective than not things how many more billy goats and shoulder blockers will hone the craft? I love swift slicing punchers who can be cutters and train to target a cut...manuver to the blindside of an opponent...flick a jab off the one good eye to blind etc etc but I'd like to leave it in the hands of the fighters to give themselves a personal effective advantage rather than have judges or refs give bonuses on cards when they already have their hands full getting it right as it is.