Dependency Injection for user and db is used througout the controllers
The Routing features a consistent rest api
The Routing provides some legacy routes, so that for exampe the Android Bookmarks App still works.
There is a publicly available api that provides access to bookmarks per user.
(This is usefull in connection with the WP Plugin https://github.com/mario-nolte/oc2wp-bookmarks)
ganomi