Yeah those arrow spam at early part is ridiculous. People are not that dumb to know that they shouldn't go there. And instead of putting invisible walls, which will make that part hollow, you can put shabbyhouse (or idk what is it called) like that one on 0:41 and fill it through that straight line until the road end. You should also consider what to do with the empty plots on the other side of the street.
Also, that 2 houses on 0:36 is quite unpleasing to look at, put something more fitting for such big empty space.