I am in the process of creating a case, and I would like to get some feedback from everyone regarding the current offerings. I am very appreciative of any help you can provide. 1. What are the current sleeves/cases missing that you find would be useful? 2. What is your favorite material for the exterior of a case? 3. What do you think is the best material for the inside of a case for protection? 4. Do colors really matter that much, and if so, what would you say is the "best" color for a case/sleeve? 5. Add in anything you can think of that you would like to see in a sleeve/case I am looking for responses on all models of the iPad, including the mini. Thanks!