This post is not about hidden traps or unknown ground effects. But I would like character pathing to walk through obvious fire (or tangling vines) less, especially since it's impossible to control all four characters at once. There's no reason I can see why my character (or one of the companions I'm not actively controlling) would walk through fire (or tangling vines) they can clearly see and that do not block access to the place to which I want them to walk.
