WP Roadmap is a project started out of my desire to get more information about the orginization of the internal calls that WordPress makes. By organizing the list of calls by the order in which they are executed, WP Roadmap aims to create a detailed view of how WordPress works.
The code currently tracks actions, filters, includes, and requires. WP Roadmap can track the order of these calls from different page views and different versions of WordPress. If anyone has other items that they would like me to add in, please let me know.
You can see a very rough version of WP Roadmap running here. The data set is very limited, but it will give you an idea of what WP Roadmap aims to be.