We are glad to hear you are happy with your wing vestibule and appreciate your feedback! Within the last few years, we have updated the structure and durability of our flex-bow tents. With these changes and when coming out with our vestibule accessory, we needed to have a product that could accommodate those who are buying a new tent with a vestibule, and those who may have the older version of our flex-bow tents that would like to purchase a vestibule as well. We have found that having two vestibules in our product line, that can be adapted to fit multiple needs depending on age and size of the connecting tent with just a few quick grommet placements, rather than 3-4 different vestibule styles is more cost effective for both us and our customers. We will take your feedback into consideration for future alterations though!