Let me start with the things that I did and how am I using some things to get results

I have set up modular structure as:

application/
    /configs
    /layouts
    /models
    /modules
         /users
         /profile
             /frontend
             /backend
                 /controllers
                 /views
              ....

1. I write a plugin that does addes changes with FrontController->setModuleControllerDirectoryName() FrontController->addModuleDirectory() and It is all good I have a changed all the directories according weather admin page is requested in the url or not (it is some thing like /admin/some/some)

2. Let's say I have a single layout for anything that is related to Profile viewing , in this case the "Profile" module. The Profile layout is divided into three parts

   

In the layout I was pulling out the Profile/PhotoController 's index action with a action()

$this->action('index', 'photo', 'profile');

Then I have faced few issues 1. Can get passed Params inside the Photo Controller when calling ( profile/profile/index); 2. found out that helper Action() is evil cause it starts another dispatching loop =) --- and now I am thinking that my approach on plugging in controllers modules into layout also evil =). anyhow how Should I deal with plugging in some controllers (another module controllers) into the layout ?