I fianlly have all the results back from testers. 24 dresses later, we have a pattern pack available. It includes 6 dresses at 4 sizes each.
Dresses include: Shell Brook which was just released individually today, Diamond, Ribbon & Lace, Snap Dragon, Oh Snap and Baby Tay.
Pattern can be purchased on Etsy here: http://www.etsy.com/shop/CraftingFriends4you