I try to be a reflective advisor, and it’s interesting how often people coming to me for advice want prescriptive and push in that direction. In fact this article just made me realize i mad that mistake just last week, giving prescriptive advice without really understanding the situation, because they leaned on areas where I identify as having deep expertise.
However after talking to a few founders and reflecting on my own experiences I felt there is more value in having an expert in the domain - considering the benefit of contextual stories you get to hear from them on how they handled similar situations. I just feel the merit of this experience though from a prescriptive advisor wins narrowly over the merits of being with a novice advisor even if the person has a reflective method. But I can imagine situations that warrant a scoring like what you suggested. I just hope people who read this note can try and be aware of these aspects to enrich their intuition when choosing advisors.