When I pull up my library on the iPad I dearly wish I could organize things by my own categories as I do physical books on a shelf and virtual volumes on iBooks. For instance, why not let me put all the Ignatius Study volumes or all the Navarre Study Commentary volumes in a single category that I designated so they could all apppear together. I’m actually discouraged from getting more volumes as it becomes harder and harder to logically sort my library in a way that is intuitive to me.