Great to see this finally getting some traction - hopefully the WMR/MSFS team will investigate this.
I mentioned it somewhere else: For now, you can open windows in the cliffhouse environment or in the MSFS main menu and make them “follow” you. This way virtual windows will remain in your view when you load into the cockpit. Once you are in the cockpit, you can move to a position that suits you and control using win+y. Just try to avoid hitting the windows button by accident.