I would love to try to hack on that to try to get a cross platform GUI toolkit that's similar to WPF.
Silverlight was a great peace of tech with a ton of stuff developed for it (widgets, testing tools, libraries, etc.) having that as a cross platform GUI framework that works on windows/linux/mac and ios/android/wp would be amazing and is doable - for simplicity you could strip out the codec parts, DRM and stuff like that, implement rendering on top of OpenGL ES and do platform specific input handling.
LGPL kind of makes phones a no-go so I would like to see if it's also covered in this switch before spending time on it.