It's not that useful for now, but my heart says: let's use an interface for the admin controllers.. All controllers need at least the action_index() method, IMO this should be declared in an interface.
interface admin_action_controller
{
     function action_index();
     function settings(); // deprecated, I know..
}
and in the related controller:
class ManageBBC_Controller implements admin_action_controller
{
	/**
	 * BBC settings form
	 * @var Settings_Form
	 */
...
It's just a quick'n'dirty sample..
Opinions?
			
				yep, we have.. not an interface but an abstract class but we have .. :)
			
			
			
				Then...
/me moves it because TE is too lazy. :P