Design for Makeup Case - Trolley Cosmetic case

Hi, I manufacture Cosmetic trolley cases and sell nationwide and my brand is well known among makeup artists and makeup lovers. Im in need of new design for our trolley cases, most of trolley cases are very basic and customer are asking for more sophisticated design, here are the links to some of the basic design that are available every where: [login to view URL] [login to view URL] [login to view URL] [login to view URL] [login to view URL] I need to enhance these basic concepts into something sophisticated, keeping in mind that the case must be: Airport friendly , easy to carry on, easy and strong to ship must have additional layers, drawers, doors, lids without adding to its heights add a LED light somewhere (most likely on top , if a lid pops up and LED come on it would eb nice) must have electric outlet attached to its bottom, retractable cable that would connect to wall outlet so makeup artists can connect dryer and their electric appliances to the case instead of running an extension ... Case must have small and big drawers, keep in mind, some people carry small cosmetics, and some carry big appliances like airbrush and etc... must have pouches on the doors on the sides to carry brushes and small stuff must be stairs friendly, a good idea would be to have the large wheel connected to back of the trolley case (on the bottom, all the way to the back) so it will be easy to taking it upstairs must be designed for small and big jobs, meaning if artist wanted to take only partial equipment to customer house be able to take some part of the case and not the whole thing. challenging? its supposed to be. let me know what you can do. Thanks