It would be nice to restrict supercharging for people who are within a certain distance from home, and have enough charge to get home.
I have run into quite a few people who use Superchargers instead of charging at home. I understand that in some cases Supercharging may be necessary, such as for people who live in a condo type building and have no way to install a charger. Having said that, there are plenty of people who abuse the Superchargers because they are faster and possibly free depending on when the car was purchased.
Exceptions could be made for times when the Superchargers are not busy, for people who can't charge at home (and can prove it to Tesla), or for other reasons that Tesla feels are adequate.