Separate Thumbstick and Touchpad Mappings for Windows Immersive Headset Controllers

Currently development for Windows HMDs is entirely possible through Steam VR, however, the lack of separate mappings for Thumbstick and Touchpad means that we are unable to use the controller to its fullest. A simple additional axis mapping would make the engine fully capable of creating content for Windows HMDs.

Is there any update on this? It would be great to have the WMR controllers fully functional in unreal.