This will never and should never happen. The solution is more chargers. They would have to label every single charger cleanly. Sort out when chargers fail to work, or are not working at 100%. People would still blindly move to another charger complaining about low charge speeds on their assigned one when it's -5 below and the battery is cold soaked. Others park in spots but not plugged in, it would be just chaos.
The paired problem will be less and less every year as more and more V3's get deployed. The slower charging cars will slowly filter out of the fleet in the next 10 years also. We just need more chargers, preferably V3.