Yeah I agree with this. I will try to use it in earnest on my next project.

That metric is the key piece. I don't know the right way to build an automated metric for a lot of the systems I want to build that will stand the test of time.

To be clear: I don't know that I would recommend using it, exactly. I would just make sure you understand the lessons so you see how it best makes sense to apply to your project :)