Wrote a Blog Post
For a while, I wanted to share how we are developing at metr because I really like it. But not only that, I found out that writing this kind of information empowers the team to change that. I found that it's easier to change things that are well-defined and explicit than things that are just implicitly agreed upon. The flexibility doesn't come from having everything loose, but having everything  fixed, but easy to change. 
Here is the post about how we develop at metr: https://medium.com/metr-tech/how-we-develop-b19fa8d8f6f6