Finishing what you start makes teams more productive and predictable
This is why when leading an engineering org I narrowed down to one metric:Committed to Completed RatioIt encourages completing things and only committing to what you can complete.It's legible, easy to understand by engineering, product, and management, pointless to game, and positively reinforces completion. It's quite difficult to accurately predict when a complete feature will ship, let alone a whole product. But, if one breaks down a feature into its legible constituent components and then commits to completing just what is within that (which also necessitates any required communication to arrive at understanding the requirements) then over time you can get quite good at predicting what you will be able to get done in a sprint and better at only committing to what you believe you can actually complete.