bblatest branch / listenTo refactor question

The 'bblatest' branch contains an old refactoring to use listenTo().

https://github.com/NYTimes/backbone.stickit/commit/ffd912a589f6417966cd7a0b150cece365a97333

Seems like a real simplification; I am curious as to why this didn't go anywhere -- i.e., was there some issue with the approach that would preclude existing functionality.