Most of the things in this comment just don't make sense.
you could run a 100A circuit to two Gen 2 Wall Chargers (or two 60A circuits). You then set each charger to 50A, which gives you 40A charging per car (80A total which is 80% of the 100A circuit). When Tesla enables sharing you reset them to [...]
This doesn't make sense. The Gen 2 units already do have circuit sharing. But then you're talking about "when Tesla enables sharing", which isn't some future thing we're waiting on from the Gen2 units. If someone buys to Gen2 wall connectors, they already have sharing, and this is sorted already.
If you can get around that you could run a 100A circuit to two Gen 2 Wall Chargers (or two 60A circuits). You then set each charger to 50A, which gives you 40A charging per car (80A total which is 80% of the 100A circuit). When Tesla enables sharing you reset them to 60A and enable sharing, which is still 40A per car when both are in use and 48A when just one car is charging.
But that's not how you set up sharing with the Gen2 wall connectors anyway. You don't set the current on each one. You have to designate one as "master" and one (or more) as "slave". The "master" one is where you set the current for the whole circuit, like the 100A you gave in this example. And then the current setting for all of the others is where it is just set marked as slave units. The master one then makes the decisions of allocating current based on detecting whether cars are connected to the others or not.
I agree, it should cover my needs, I'm a big proponent of taking care of your battery, would not want to charge at 48A even if I could. These batteries are not cheap to replace and degradation is a known issue with this cell chemistry.
This concern of taking care of your battery is irrelevant related to home charging speeds. ALL home charging rates are extremely low power from the battery's perspective. This is a system that can take over 200kW of power, and you are talking about quibbling over whether to use something like 7 or 11 kW. That is all so low the battery won't care in the least.
48A is just 11.5 kWh (240v * 48A) , which is not really that much especially when you consider 40A is 9.6 kWh. DC charging seems to start around 50 kWh with SuperChargers running up to 250 kWh. There are loads of Gen 3 chargers and HPWC units out there and I have not heard of any issues.
kWh is the unit for amounts of energy, by the way. Charging power (speed of energy delivery) is in kW.