Simple Idea: Rename Windows Phone!
I think it would be the best for Microsoft if they named Windows Phone different from day one.
It helped a lot with the xbox. Because nobody would buy a windows-box. it sounds just not cool. like Windows Phone just sounds not cool.
I personally love Windows Phone but a different name could have given a better image and feeling to the operating system.
Its never to late to change it!
greetz from Austria : )