At this moment if your party does not kill even one enemy, you get 0 exp at the end. And yes ofc this all is still valid as is only at the current state. As I already wrote, imo all the things that are suggestions for the future are shots in the water since we do not know anything about the devs plans. Still opinions about the current state of different things in the game, as skills, weapons, way of strategic map, battles, etc might have use for the dev team even now, be that supporting their plans or perhaps making them question or retink certain things that would be bould on the current base. Just look at it as a pre suggestion suggestions or something like that ;)