Not integrated, it is waiting for "imports" to load (if Array is passed) before executing the
action hook, - which will simplify code structure, save your time with writing less code, and less code means less space for errors.
The main idea behind every package is to simplify developer's work, as you may implement every NPM/Atmosphere package yourself, but with Open Source and bigger community, you will save time on not re-inventing what was already done.
It's up to you use it or not, or write your own routing solution.
Our main goal is to keep FR project up to date, compatible with latest Meteor releases, and backward compatible with original FR.