well, here it gets tricky. we are working closely with MS, they are guiding us. Visual Studio also only allows you to deviate so much from the UI sets. then, l

well, here it gets tricky. we are working closely with MS, they are guiding us. Visual Studio also only allows you to deviate so much from the UI sets. then, let's take a look at the BI app you're using as a reference: http://www.pushbi.com/Videos.aspx http://www.pushbi.com/Videos.aspx Notice how it is all about horizontal scrolling? Looks nice, right? How does the user know, where he is? Each "page" has a different meaning, function, but they are a fluid horizontal canvas. Notice something else? Surface is a 16:9 device, MS is using this as a standard. this emphasis the horizontal even more than the vertical. I am not convinced this works for complex apps with data entry. The BI app is more for consumption, you flip through your reports. Notice how they shoot you out to their online dashboards? Discoverability is a key issue I have with Modern UI. Some buttons can be exposed directly, but the guidelines are pushing you into button bars which only appear through swipes (from top or from bottom). Colleagues have tried it with their kids. iOS, Android? No problem for a 4-year old to figure it out. Modern UI? Frustration. And yes, I am comparing the typical business user to a 4 year old when it comes to patience in learning a new UI scheme.