It would be a huge benefit to be able to duplicate a project. I'm not sure what the technical implications of this would be as far as things like assets go, if they're all stored in a shared area. (Kinda seems that way).
This way a basic app could be built, and used as a template for future projects that extend functionality of the base application.
If there's another way to accomplish this that I'm not aware of, please let me know.