Perhaps something lighter than a comment could be considered. For example, tags. A downvoter could select one or many from a pre-selected list of reasons for di

Perhaps something lighter than a comment could be considered. For example, tags. A downvoter could select one or many from a pre-selected list of reasons for disagreement or distaste. A few possible such options could be "erroneous", "discourteous", "irrelevant", "unsubstantiated", "insubstantial", "disorganized", etc.