@glitzersachen @leanlearnlead granted the faster a battery is charged, the less efficient it is and the more straining it is on the battery chemistry.
But aside from that, there's no reason why #BEV #Charging needs to be more complex than these few steps;
1.
plug in the vehicle with a CCS2 plug
2.
select the amount of kWh / money one.wants to spend. (being able to abort if the energy price is abdurdly high!)
3.
pay with card (NFC+PIN).
4.
upon payment confirmation, the vehucle gets charged and the charging station shows an estimated completion timer & offers sending a notification via eMail or SMS.
5.
Once completed, the charging station will unlock the plug/socket and send said notification out. In the meantime another customer could just pull the unlocked plug and start their charging.
Just like on a (abeit slow) gas pump!