Simply put, it's too complex. If you want it to be bigger than 10 unit (which is 5 meters by the way) you can rescale it using overload menu. About shapes, you can switch to manual and give each corner different shape. That's how I make airfoil shape for custom wings. They are part efficient, easy to work with and looks good enough.
Simply put, it's too complex. If you want it to be bigger than 10 unit (which is 5 meters by the way) you can rescale it using overload menu. About shapes, you can switch to manual and give each corner different shape. That's how I make airfoil shape for custom wings. They are part efficient, easy to work with and looks good enough.