The Model 3 performance is 80 kWh total capacity (82 kWh on the newer ones).
> We should be moving to smaller battery on light efficient vehicles
No. People will buy the cars they want. If they want the luxury of an Mercedes EQS then that's what they'll buy. If they want the excess of a Hummer EV then they'll buy that too.
There need to be better batteries with greater energy density for a smaller pack weight once decent range is achieved.