Ah, the old FFL replacement rumors. IIRC, the reason why this VR concept was scrapped was due to some other pop up VR Potter experience beating Universal to the punch.
If Wizarding France got an expansion attraction, maybe they would go with some smaller scale dark ride or walkthrough style attraction. IDK if they would go with FB considering how that died out popularity wise, but maybe they could pull from the reboot HBO Max series if that takes off when the time comes.