That's kinda just moving the problem: What is this quality scoring algorithm and how do we built it? If we had such a quality score, then the problem becomes d

That's kinda just moving the problem: What is this quality scoring algorithm and how do we built it? If we had such a quality score, then the problem becomes differentiable and far easier to manage. But it's hard because we don't have (and don't know how to build) such a metric.