Behavior should be mostly auto generated config Key word there: MOSTLY. The trick that's never been really figured out is how to make adding the bits that can'

Behavior should be mostly auto generated config Key word there: MOSTLY. The trick that's never been really figured out is how to make adding the bits that can't be generated on top without making a brittle mess. If you squint a little, you could also regard the Wordpress ecosystem as getting close - I've seen things done with custom fields that are remarkable.