That seems better than judging performance based on a single metric, but still wide open to gaming. In my experience, it's better to use your full range of obj

That seems better than judging performance based on a single metric, but still wide open to gaming. In my experience, it's better to use your full range of objective and subjective facilities to select a good manager, and then trusting them until it's time to re-evaluate (using the same means but now with more evidence of their performance). An organization that runs on extrinsic motivations can only ever be mediocre at best (and often worse), and there's very little that kills intrinsic motivation more than putting people into systems designed reduce a human's potential to a number (or several numbers in the case of your balanced scorecard).