How do we get rails' engines like ability in ember cli today?

This rfc on github has some discussion on the path to bring rails’ engine like capability into ember. Is it possible to do this in ember-cli today?

Scenario: If my large app has a user management system and an inventory management I would like to keep these as two separate ember-cli based apps which would get mounted into one common app.

I did see a reference to something similar in this issue but I don’t want to make multiple folders in one ember-cli project and use broccoli to merge them.