How to design a (truly) modular application with CI?

[eluser]liri[/eluser]
That makes sense but it's not what I'm talking about.
I can't use this method where the module name is the Category and the controller is the sub-category because - the most important thing is to make the sub-categories modular, meaning that the admin can enable/disable them, upload and add them or remove them. In your example, what will happen is that the "reports" will be the category and module name and then reports1 will be one controller and reports2 will be another controller. Assuming that's fine, it's not really modular in the sense that how should the admin remove it? I'll have to implement more functions in handling these controllers, their views, etc... it misses the entire point.