Motors and other output controls can be freely added. For the Xbox controller, we'll probably add the trigger motors on top of the two basic ones it gets from Gamepad once output is fully hooked up. Unfortunately, on the "classic" desktop there isn't really a good way to talk to the trigger motors (at least that I know of). The HID driver for XInput controllers does make them available but is sort of unusable because it combines the two triggers into a single control (for the sake of DirectInput). And XInput only provides access to the two primary motors. On the Xbox, we'll hook them up. I assume on UWP it'll work fine, too.