I'd just add that I only managed to max the TCF because I hold a masters in France, am married to a French woman and have lived in France for 10 years! Suffice to say that to get high language scores, it needs a massive investment of time and energy (and of your life ). Most people aren't in a situation where they can dedicate this amount of resources, hence why I doubt the rule will hugely impact the cut off.
Time will tell obviously..
Time will tell obviously..