How will this type of structure act exactly? Basically act rigid in one direction and springy the other?
I think so, because if you look a couple slides ago, they talk about how we're trying to consider the strain between them. From an intuitive standpoint, it makes sense for these to stretch differently from our bottom left to top right corners than from our bottom right to top left corners. There exists that extra bond, so there would be a different strain between those if we stretched in those different directions.