Cable detanglers have been around for a long time for BMX bikes allowing for more extreme stunts. but they are only for a single cable (rear brake) My idea would be to make one for mountain bikes allowing the cables for gear changes to also be 'detangle'. stronger mountain bikes are making the sport extreme with the size of the jumps but if we could find a way to spin the bars 360 degrees, the stunts could get more extreme!

They way I am thinking, create two separate detanglers, one on the bottom of the head tube for the rear brake, and a double (not yet sure how to do that) on the top side of the head tube for the gear selection cables.