Too Long; Didn't Read
Code reviews and pull requests are the basic building blocks in many software engineers' life (The Workflow) They prevent bugs, mistakes, and help distribute the knowledge around a code base in small units of changes. It is very important that we try to have a policy than addresses all these different variables, and tries to optimize the user experience (with all that it entails) and developer productivity. Have a policy. Define before hand what is the threshold to approve or reject a PR and in which cases.