We all love the variation that comes with Linux. But if you could why not make it optional for those who want the same experience when changing distribution. I wonder if a version of the operating system could be run from the browser and control the native one. A simplified version would mean that a novice could operate a lot of different desktop environments. Like GNOME, Unity, Cinnamon, MATE, KDE, Xfce, LXDE and Enlightenment. If a larger group of distributions would work together on something like this I think it would make it easier for those distributions to exist in the workplace.
With this you could take advantage of the creativity in web development and a non changing experience for those who want that.
Example of a launcher although not very creative.