From month view, if a day is double tapped it will cascade to week view. Then once double tapped in week view it will go to the half week. Additionally, if a day is tapped once have it open up the full page day view (today view). With these options, please still leave the drop down categories to choose from month, week, half week, and today from all views. I believe that these improvements will make your calendar easier to navigate thus easier to fully take advantage of the capabilities.