These are awesome, but feel more applicable to DevOps than anything else. Development can certainly affect these metrics, but assuming your code doesn't introduce a huge bug that crashes the server, this is mostly for people deploying apps.

I think it's harder to measure things like developer productivity. The closest thing we have is making an estimate and seeing how far off you are, but that doesn't account for hedging estimates or requirements suddenly changing. Changing requirements doesn't matter for DORA as it's just another sample to test for deployment.