Again, i think that exactly this should not happen. Although it sounds convincing, a judge should do nothing but decide by the law, and only the law. If this goes against fairness or common sense, the law (or constitution) should be changed. The keyword is subjective, and that's exactly what should be avoided. We all know that sticking to the law still is subjective enough, of course.
What one person in the judicial system might find fair might be utterly unfair to the next one. And the result of this would be arbitrary decisions.