Look into static analysis tools for EE

We can use something like - [PHPMetrics](http://www.phpmetrics.org/) or [SonarQube](https://github.com/SonarSource/sonar-php) and integrate it with our CI servers to continually monitor our code quality and other metrics like cyclometric complexity etc... so that we're aware which part of our codebase is more bloated and needs refactoring.