MEF as a framework for angular js

Question

We created a web application using asp.net MVC 5 with AngularJS. This means that most (all but one) of the representations are html files, and the controllers are .js files. All calls to the backend are ajax calls (web api).

Now we decided that our application should be "extensible." This does not pose a problem for the internal code, since we can use MEF for this. But how do I approach this problem when I want to display different views when a plugin is running? How do I embed .js controller files with new code snippets? Is it possible to do this?