Good day, Pimax and comrades.
It would be great to have some output connector, linked to controller’s inputs. For example, we can connect the controller to a weapon-like case and use it’s trigger input as a trigger for a force feedback actuator, implemented in outer case.
Sorry for my poor English 
I’m guessing you mean kinda like the wii mote plugging into accessories?
Oh, I know nothing about wii mote
Nintendo Wii had add ons for their controllers. Some were simple plastic holders (ie tennis racket) others connected to a port. Ie you could get a Fight stick for street fighter that plugged into the wii mote.