Much more intuitive is to show people miles/percentage charge. Why should they need to convert from kWh in their heads?
I'd like a linear scale where I know how many miles I will get for each remaining percentage of charge.
(And before someone says miles/percentage isn't comparable between makes/models, the primary use is to track efficiency with the car you own, comparing to other vehicles is secondary and should not be the main display. Let the manufacturer publish those figures to compare when buying).