If a blog admin deletes the store page from their site, and decides later they want a store how can they get it back. Obviously they can add a page called "store", but how can they get the default shortcodes back? and how can you link that new page to the Products, shopping cart, and order status pages again? I tested this out on a site and they are not child pages of store once you create it again. That makes finding them very hard, especially the cart and tracking pages.
Also when you add something to the cart, a "go to cart" button should appear. instead buyers have to hunt for it and are more likely to leave without checking out