WPF died to me because of its complexity. I absolutely hated my last job doing development in that environment.

The complexity of the design was overwhelming and yet pointless. Architected to space it was. Take a look at the signature and inheritance diagram for the "Rectangle" class.

http://msdn.microsoft.com/library/system.windows.shapes.rect...

How can they possibly extend upon that without making it uglier!? Just leave it in maintenance mode like with all the other failed MS GUI frameworks.