Now that Android phones with physical keyboards are becoming extinct perhaps Windows Phone could carve itself a new niche if Microsoft urged its phone manufacturers to ship devices with QWERTY. One thing I found lacking in Windows Phone 7 was the experience of entering text on the on-screen keyboard, especially in languages other than US English . This is a a pity because WP doesn't support alternative input methods (e.g., Swype), however, a physical keyboard would more than make up for it.
 See, e.g., http://forums.wpcentral.com/windows-phone-8/225491-windows-p.... Note that the forum post is about version 8.