It was possible to buy some sort of vibration motor setup for most gameboys. while gimicky, for some games it was a pretty slick feature. Would it be possible to add a vibration motor to a gt/express, or to a controller to give some sort of feedback. Now i built something like this for a genny controller once, and i made sure i used the button that was the action button in most games. If i fired my guns in a shooter, or jumped in a platformer you would get feedback from the motor. I would like to see something similar to this on the gt with a pot to adjust the level of feedback. What do you guys think?