Having been a WP user and developer since HTC HD7, I have always been excited about updates. Even couldn't wait for official Denim so flashed Finland ROM on to my Hong Kong Lumia 1520. However, for the first time, the UI changes to be brought about by Windows 10 for phones is making me hesitate about this update. Using the current version of OneDrive app as an example, I struggle to understand why they think the search button at the top of the screen provides better usability. There is space on the app bar. I am OK with the hamburger menu on the top (because I don't use it at all!)

