There's not a battery that can reliably handle that. Batteries already require power to be throttled due to heat. It's cool that the idea exists, but there's a reason why the charging ramp already sucks with a number of cars and the only ones that don't aren't that fast to charge at lower levels.Both need to be dumped for MCS.
https://en.m.wikipedia.org/wiki/Megawatt_Charging_System
It definitely doesn't hurt to give the tech headroom as batteries improve though.