It would work much in the same way the Xbox Live hub stores all your games. The difference being there could be multiple customized hubs. Say, for example, I have 5 apps that I routinely use when traveling. I would like to be able to take all 5 apps and place them inside one folder that could be pinned to the main screen. Then, whenever I click that tile, it goes straight to those 5 apps. I think it would be a neat way to keep apps organized.