I think the potential max of 700kWh is more of a demonstration of how far behind we are. The sad reality is that charger installation has been funded with minimum government backing, so the cheapest realistic solution has been offered with a claw back through the cost per kWh expected to take a very long time. Nobody is remotely considering the short term future needs let alone what needs to be available in a decade. When I got my first EV, 350kWh would have charged the battery in a record time except the car was only capable of 22kWh charging. Then 150 seemed decent and is still where a lot of cars are, which means the target charging time is kept to 30 ish minutes. Even with the 800V architecture that KIA/Hyundai/Genesis enjoy the theoretical 350KWH is a 16 minute charge. However, you need to find the right charger at a quiet time with a suitably conditioned battery to get there.
The thing that concerns me most about battery swapping, is what happens over time? After 90,000 miles does whatever holds the battery in place still hold it as securely? Is there a possibility of a swapped battery skidding down the road underneath the now coasting car? Afterall, we are very aware of the reputation Chinese manufacturing has.
I'm Autistic, if I say something you find offensive, please let me know, I can guarantee it was unintentional.
I'll try to give my honest opinion but am always open to learning.
Mark