I guess it depends on what you are going to do. The unconnected buttons such as esc should still exist on one connector and if you are changing controllers you can just trace the wires to reconnect to a new controller. I replaced my HR controller with a keywiz when the HR died and all I did was cut off the wires and reconnect the ones that I needed. The biggest change was daisy chaining the grounds since the HR controller has multiple grounds.