(Post author) Good point, we actually do take that approach - we have about 8 different Backbone apps currently, for different aspects of the admin and student

(Post author) Good point, we actually do take that approach - we have about 8 different Backbone apps currently, for different aspects of the admin and student experience. We don't have a hard and fast rule for when we break into a new app, but it usually becomes obvious at some point. And it's not too hard to refactor that sort of thing, since it's mostly just changing a routes file around.