Some spells should be more targeted than they are now. Like some spells create a line of effect, and they go right through the baddy and hit other baddies behind it. And then if a baddy wanders into the line before it disappears, that one's toast too.
Some of these spells should be more like, a projectile shoots out and disappears the first time it hits something.
But I don't want to get rid of all the area-effect spells, either. Maybe just have fewer of them?