1) range - when driving on a motorway, with regular pauses every ~2.5 hours, it must be possible to drive two periods without charging: 5 hours at regime speed, plus some slack, means 700 km.
2) comfort - range must be long enough that manufacturers do not need to focus too much on aerodymanics vs internal space; the correct outline is: horizontal, very steep, horizontal; an arc like a Prius is an abomination.
3) predictable battery life span - I'm not advocating for a huge life span, I understand there are limits, but I want to know in advance how the range evolves as my car ages. ICE vehicules are very clear on this point: range never changes.