Interesting solution, I’m glad it works for you but it’s not 1:1 with what you previously had. OculusVR and SteamVR both had their own controller orientations. With OpenXR there’s now a new standard, which means that the orientation has changed from what it used to be. You can’t edit the MotionController rotation as that’s determined by the VR Runtime, but you can change the relative rotation of anything that’s attached to them. Which is something you have to do when converting from Oculus/SteamVR to OpenXR.
Hope that helps!